Dear Ambarish,
If you kill the TP Process, Cleared the TRBAT/TRJOB tables and deleted respected TR from Que as shown by Manas then it should not appear in the STMS list, it should have been disappear.
Is it still in STMS que after taking all above action or It get deleted but when you try to add the TR again it shows the truck symbol again ?
Regards,
Anil