So sorry to hear a out your loss...at least you're okay. Without knowing all of the facts, it appears that the blown tire or broken hub, or bad bearings may have caused loss of control based on your speed, road conditions (straight, curvy, etc). I would also check to see if a spring shackle or bushing broke that may have caused the axle to move. We have used the Anderson for many miles and tows and it has been great. Your loss of control may have caused the bushing to break and come out. We have a TPMS for our trailer tires which is very helpful. Although, you may not have been able to prevent this, at least you would have known if there was a problem with the tire. I have driven over two hours, with a very heavy fifth wheel, without knowing my spring shackle was broken and the axle had shifted. I have also towed a boat trailer with a broken hub and narrowly missed a disaster! With how new your RV is, I would look at the flat tire first. I am not an expert so these are just some things to consider.
2015 Rockwood 8329SS TT
2004 Chevy 2500HD D/A 4X4 CC SB
Andersen Weight Distribution hitch