Sounds like you either have a frozen brake, or an axel and hub problem, maybe both.
I would tow the car in, because both of these problems are not usually repairable by a layman.
For the Hub, you would need a 2 ton press, which is very dangerous equipment. Same thing with the axel.
The only other thing I can think of would be the rear end, but the wheel would be able to roll.
The most likely thing I cna think of is that there is something wrong with the brake on that wheel.