You dont need a rear proshaft to move the car. The 'mechnanic' has done something wrong, dropped the transfer box or something. I hope you havent paid him yet.
What actually happens when you try to drive off? Help us out here!
Yeah, had me guessing when it came up on the phone, FridgeFreezer ! So, we'll go with 'Why does my ABS light come on?'
ABS warning lights are usually associated with road-wheel sensors and reluctor-rings that make 'em work. Get it scanned- my AUTEL (not the most expensive scanner) tells you what wheel- which takes out the guesswork.