assuming he does make a return i'm pretty sure his posting "style" would give him away reasonably early on!
the best thing he could do is reregister as another user, make sensible legible posts, actually absorb any advice given & generally use the forum like everyone else
if he doesn't single himself out or make himself a target then he shouldn't recieve any flak
plus he should get himself to his local club & enjoy racing his cars
after all thats what its all about