I've done it, ironically it was also on an STI (90_Shelby).This quote is hidden because you are ignoring this member. Show Quote
I think whoever installed that wheel used an impact gun, Impact wouldn't budge it, used a 3' breaker bar and a snipe, after penetrating oil... That stud was bound to snap.
I agree with ThePenIsMightier, use impact to take them off, and obviously properly torque on.
I've never had an issue using this method on my personal vehicles for ~8 years.