How can I stop a pending EEM/TCL script?  I have a Catalyst 4506 version 12.2(40)SG.  The command 'event manager scheduler clear' isn't available.  The output of 'show event manager policy pending' shows:

No.  Time of Event             Event Type          Name
1    Wed Mar 3  09:39:31 2010  none                script: test_err.tcl
2    Wed Mar 3  10:56:42 2010  timer watchdog      script: free_mem.tcl
3    Wed Mar 3  11:43:19 2010  syslog              applet: Login-Fail

So the policies coming after the stuck policy won't run.  I've tried to un-register/re-register the policy, but it didn't help.