If it was me I would put the vehicle on the tow dolly and disconnect the rear drive shaft. Check the transmission now and see if the driveshaft is bolted to the output shaft or is it just slipped into the back of the trans on a spline shaft. If it's bolted you're good to go. If it's splined you'll have to plug the tailshaft hole to prevent the ATF from leaking out. Either way you're still going to have to figure out how to securely hold the rear of the shaft off the ground, or remove the shaft entirely and plug the tailshaft hole. My gues sis the vehicle will move in 4x4 with the rear shaft disconnected. I would only go a short distance slowly to a spot where you can connect the shaft again.