I just re-checked the static length of the shocks as the TT is sitting outside. With the wrong shocks they installed, there was only 1.25" before the shocks bottomed out in the fully compressed position which could account for part of the damage. When I took the shocks off, there was also one upper bolt that was loose and had about 1/4" end play in it. If the shocks were bottoming, I can see that causing the bolt to work loose.
Maybe overtightening the bolts as well as the wrong shocks led to the bushing damage. Sure glad it wasn't like that for thousands of miles.