if i remember, the driveshaft is bolted together- two flat surfaces with bolts thru them. after the bolts sre removed, there are still two little studs connecting one plate to the other. maybe a good whack?!?
Id wait for a second opinion though. strange thing, my ford 9 has the same set up, only beefier.
mmmmm beeeeef.
after rereading your post, im not sure if i tried to answer what you were asking.
If your trying to remove the u joints, remove the c clips and support one side- take a socket and whack the other side. should inch it along out da hole.