Troy got it right, sorry if I got the terminology wrong.
Sounds like the seal is semi-easy to replace, I'll give that a shot. Unfortunately no Air compressor, so no BFI, but I'll figure something out. A floor jack has been helping break those bastards so far, but it's only 19" tall and that tcase is a good 2 1/2 - 3 foot up there. I can actually situp under my truck and have to reach up to get at this stuff.
Considering the center bearing was completely shot (rubber coming out in large chunks and reports from follow drivers telling me it looked pretty damn scary) do you still think it's probably just a seal? or is there a bearing in there someplace that might be screwed up as well? This t-case is behind a g-series tranny which is behind a 350. Not sure how much torque was coming thru there throwing that drive shaft around but probably a bit more than the 22R it was designed for.
I'm outside your window watching you read this.