I flat towed my wranger behind my ZR2 Sonoma, which was a 4500lb truck towing a 3600lb jeep. I had to be careful turning, and stopping quickly was out of the question, with the rear axle going into ABS and the front axle not even close to locking the tires. Forget the S10, you'll die trying.
If you found a tow bar, renting a U-haul truck or van "local" if they still do unlimited mileage is one option. Make sure you toss a bunch of weight in the back if you go that route. Tow-bars are not really the best way to tow something heavy on today's highways... The lack of brakes being the major issue, but some vehicles don't like to be led on a towbar... I think chevy's are OK in that respect, but it's still going to want to push in turns, hence the need for a heavy towing vehicle.
I'll jump in with whoever said to go check it out and drive it home. It'll be a slow trip at 50mph, but you'll get there, and you're gonna have to get used to it some time. That is assuming it starts and drives. Bring tools, a bunch of fluids, two good batteries, a 12v air compressor, and see what you got!!
Good luck!