Just the handbrake? Just drag drag it with any old car…you don’t need a 4×4. The only issue is if you need to screw in the tow point, which will be with the spare wheels stuff.
I’ve had the AA break into a Transit a couple of times, very easy to wedge out the door. Might be more difficult if its deadlocked, as they can’t pull the interior door handle.
Another option, if its got towing electrics for a caravan, the S socket has a permanent live, so if you carefully work out the correct pin, you can connect 12v and the negative pin and it may liven up the car enough to operate the locking. (my old campervan had the S socket connected to the leisure system, and I used to trickle charge it via that socket)