Unless you have X-Ray eyeballs and/or a magnetic flux field generator with lots of iron dust to sprinkle on it...I'd get a new one
Brand new prices range from around $150 to $250 bucks, plus about an hours time to remove/install
Then the frame of your TV...have it inspected and signed off in writing that it is straight
Vehicles are designed with crumple zones that collapse to absorb the energy of a crash. Not all of the energy was absorbed by that car, as your truck also took energy from that crash.
Work hardening and micro fractures are there. Question is how extensive is it. Plus on a high, dynamic stress component that connects your TV to trailer. "Tin Canning" is the potential issue over time. The cost to have it X-Ray'ed or MagnaFlux'ed would cost close to or more than a brand new one
Low cost enough to replace the receiver and not worry about it.
That is just my opinion...
-Ben
Picture of my rig1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...