Seriously I have been reading this thread over the last few days and really with those that are so hung up on the whole flight sim issue I must say I'm quite disappointed.
I know a lot of professional pilots who use or have built flight sims at home, some due to passion of flying and some just to practice emergency procedures and approaches on the types they fly if they are feeling a little rusty.
The fact he has a home built sim really has nothing to do with the issue.