[Dacfrs]

Okay, going down the interstate, truck blows tire, pipe falls off truck into road, I manage to get my FRS down to about 65mph, before I got no where else to go, and run over the pipe. Both driver side tires blow out, I pull over, call AAA, get new tires and continue my trip. Only now, something is not quite right, traction control comes on in corners now where it did not before. Car feels loose, basically as if the entire rear end is loosely mounted, feels like it wants to swap ends. Toyota dealer says they see nothing wrong, technician drove the car said he didn't notice anything odd, but I believe he doesn't know the capabilities of the car, so I don't think he put it through it's paces, so to speak... New tires were installed on the front...I've swapped them around, same thing. Struts appear to be ok, no leaks, no funny noises. Any suggestions?