如何销毁有状态的会话bean

我有一个SFSB定义的波纹管：

@Named("loginManager")
@Stateful
@SessionScoped
public class LoginManager {
    @PersistenceContext(type = PersistenceContextType.EXTENDED)
    private EntityManager em;

我有一个带@Remove注释的方法：

@Remove
public void remove() {
    log.info("loginManager removed");
}

但是，当我在中调用此方法时h:commandButton，将引发异常：

16:19:32,640 FATAL [javax.enterprise.resource.webcontainer.jsf.context] (default task-64) #{loginManager.logout()}: org.jboss.weld.exceptions.UnsupportedOperationException: WELD-000037: Cannot call EJB remove method directly on non-dependent scoped bean public java.lang.String cn.fh.codeschool.action.LoginManager.logout(): javax.faces.FacesException: #{loginManager.logout()}: org.jboss.weld.exceptions.UnsupportedOperationException: WELD-000037: Cannot call EJB remove method directly on non-dependent scoped bean public java.lang.String cn.fh.codeschool.action.LoginManager.logout()
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:89) [jsf-impl-2.2.6-jbossorg-3.jar:]
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.2.6-jbossorg-3.jar:]
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) [jsf-impl-2.2.6-jbossorg-3.jar:]
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) [jboss-jsf-api_2.2_spec-2.2.6.jar:2.2.6]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.5.Final.jar:1.0.5.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_21]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_21]
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]

我该如何独自而不是通过容器销毁SFSB？我发现当我请求SFSB时，将构造许多bean，而不是一个。我真的很担心内存使用情况。

谢谢！