Driveshaft spins but truck won't move is it the differential?

What is your question?

I heard a bad clanking/finding noise from the rest of my truck then a loud clank and thump now the truck will not move itself the driveshaft spins when in gear and the speedometer reads 15 mph I have to put the sucker in neutral before park I also have a slight toe in on the rear drivers side tire is it the whole rear differential and axel or what?