This could have been caused by carrier shaft wear from the axle it was originally installed in. Or,another cause could be colapsed springs to the point that they don't have adequate force to keep the center gears pushed apart,thus resulting in the same thing that happened to that guy. Or,the ol' standby that's probably the case,a bent housing. It's hard to tell without knowing the history behind the locker and axle. All I know is that Dana 35's don't have the structural rigidity to hold up to mildly substantial abuse. This sport is growing by leaps and bounds and the downside to it is that most folks that are just getting into it don't realize that they can't really drive these rigs like they see in the movies,or yet even worse,the current trend of 4X4 ads/commercials. So it's highly likely that the axle is to blame,and not the locker,but you just never know what it is until you know the whole history behind both.