Nobody answered this yet and it's why I started this thread..[/QUOTE]

to answer this it is simple.

I know shady and the only time iv ever seen hime slap or slay is at the end of the round once everyone on the oppsing team is dead "no penalty lose at all"
and at the end of a map "also no pentaly lose"

i cant say that he did or didnt do that.. but try to remember if that was when i happened....

also
it is possible you may have team killed him, and he slayed you.

Vicitms of a team kill get a menu with several options from Forgiving to drugging, one being slay.