I've played with him many hours in the past too, and there were signs I just haven't seen from him before. I know that harrowing has numerous hours with him too and has never come forward to me with suspicions before either.
Some ticks to inspect. In the context I thought he was hacking, still pretty much do. I'll leave it up to you other fine folk to decide for yourselves.
mydemo: Tick 35,400 : Suspicious twitching
mydemo: Tick 43,000: Suspicious twitchy headshot
My demo viewer isn't letting me skip to ticks after 55k for some reason, so just watch everything from 55k to the end.
fbunnies1a1: tick 12,000 twitchy headshot kill
fbunnies1a2: tick 4,800 twichy suspicious kill
"Most people think time is like a river, that flows swift and sure in one direction. But I have seen the face of time, and I can tell you, they are wrong. Time is an ocean in a storm."