Reg: stuck treads in webserver

Hi All,
I am seeing stuck threads in web server on regular basis, After bouncing web domain this stuck threads are clearing.
But what is the way to clear weblogic web server stuck threads with out bouncing web domain..?

Web Logic Server version="10.3.6.0" we are using.

web logic log show the following message:
****************************************************
Thread-43 "[STUCK] ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'" <alive, suspended, sleeping, priority=1, DAEMON> {
    java.lang.Thread.sleep(Thread.java:???)
    psft.pt8.psc.service(psc.java:257)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:815)
    weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:224)
    weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:108)