Maybe I should clarify.
Yes, I have 4wd engaged, and front hibs locked. If you do not do both of these, with the rear driveshaft removed as in this case, a big problem arises. Since there is no hinderence/resistance on the motor, when you put it in gear it will idle up to around 1.5-2k and stay there. Now that it's spinning o high, it'll grind to all hell going through reverse to get back into park! Only solution is to cut it off, then shift back into gear.

With 4wd engaged and rear shaft removed, I can put it in park - and it will still roll. Thank God for the parking brake!
Further evdidence of it is that w/ the fornt jacked up (e-brake engaged!), still in park, if I spin 1 front wheel, the opposite half shaft turns just a little ine the opposite direction (as it should w/ open diff), but stops when it engages the opposing hub... and the front driveshaft spins. I asume this is b/c the path of lease resistance through te open diff is the uninhibited front DS, rather than that other big heavy wheel.
Are the 5pd models like this?