Should fix this issue....
http://forums.steampowered.com/forum...d.php?t=969604
-On player death, loops through all problematic projectiles and if the client has changed to 'spectator', it removes the projectile.
yes first plugin posted. if im doin it wrong lemme know!

EDIT: okay, updated w/ fixed i think.

EDIT AGAIN:
http://forums.alliedmods.net/showthread.php?t=104806 <-- much cleaner version by BL4NK