Originally Posted by CdnoilRAM
Sounds like a front diff issue. If the diff seized or grenaded then you're looking at instant stoppage of the front wheels and since the front driveshaft is in constant spin, when it locked up it would have sheared the bolts holding it to the transfer case. That's my theory at least.
I don't agree, if the diff locked up the Driveshaft would have stopped instantly without any damage since there is next to no inertia with the little bit that is turning in the t-case.
what does the t-case look like? it the case cracked? where did the driveshaft disconnect from exactly? at the flange, did one of the joints in the the cardan joint fail?
my bet is the joint in the driveshaft@ the t-case failed and allowed the driveshaft to be jammed somewhere between the trans, frame, t-case thus locking up the frontend. I bet there is also ALOT of collateral damage to the t/case, transmission and frame/wiring/fluid lines!