Okay, every once in a while I'll be playing a game of Soldat where some m79er will make some HUGEASS explosion with the m79. Is this just some funky lag bug or is there some trick behind it?

Now tell us something we don't know.

It has already been reported and as far as I know it is a lag problem.
(Doesn't happen very often to me)

ok cool
now I know they're not cheating

sometimes it happens when u hit objects because when u hit ground its a small explosion but u hit objects like bunkers and stuff its bigger thats just one way it happens eh live with it

hmm haven't seen that one in a while muzz.

lol I remember the first time it did that to me (1.1.0)

First thing that came to mind was:

Damn, someone's made a trainer o.O

lol

It made the same sound as 20 m79 nades from 105b days hehe (damn trainer-using n00bs :P)