Towed 05' Precedent on Run- Rear end locked up. What to do?

[one65r]

Ok, I let my brother in law use my cart this weekend at the deer camp. When the batteries died he towed it in run with a pickup about 2 1/2 miles down a highway until the rear end locked up and snapped the tow rope Fortunately nobody got hurt, but my motor is definitely fried.

I'm debating on tackling this project my self vs. taking it to a local cart place that wants $1200-$1600 to replace motor controller with a stock or upgraded motor. They didn't even look at the cart, but said the controller was definitely fried also.

Couple questions:

1) Is there any chance my controller isn't fried given the above scenario. I guess I'm debating if I should just buy a new motor or go ahead and order a controller and motor.

2) What do yall consider my best options for a combo motor/controller. I've looked at Plum Quick and the owner is probably one of the nicest guys and most helpful I've talked to, but he said an upgraded motor would be about 3 days for their purple motor or 2 weeks for an upgraded motor. I don't need a MONSTER motor, but would like good torque and pretty good speed also. Cart would do 21 mph with stock motor, jakes lift, and 22" offroad tires on it. I'm just sick because I've owned about 6 carts (currently have 3) and this was my favorite of all of them. It's just always driven awesome. Anything over 21-22 mpg is about as fast as I'd like to go anyway because it gets a little squirley, but I guess it's always there if I need it.

3) Do I give up a bunch of range when you go with a bigger controller/motor?

Lastly, I'm somewhat mechanical. How easy is it to swap out the motor/controller? Is it easier to do from underneath the cart if I have access to a car lift? I welcome any other input you guys could offer. Thanks in advance.