Driveshaft/Ujoint rubbing help!

So my tailshaft ujoint is rubbing, the car was in an accident but insurance pulled thru and finaly covered it. The floor pan was pushed in, but was fix. Now I notice after driving it in my driveway I noticea noise got uynder my car and the u joint is rubbing against hte underside of my car. Is this something I can fix myself? My Crossmemeber is twisted and uneven and so might be my transmission mount. I just had it on a ramp so I wasn't able to mess with it. Would my problem be fixed by just buying new xmember and a mount? Or might other things or damage cause the problem?
 
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