Good info. Begs the question why they had to change out the shocks at a low 91k miles.
How these things go is that they see weeping shocks. Then apply normal car diagnostics that the shocks needs to be replaced. When the reality with AHC is that weeping shocks is often a sign of accumulator wear/failure that causes extreme hydraulic pressures leading to weeping shocks. This is because the accumulator is the hydraulic "spring" in the system that absorbs road imperfections. This lost spring is also why your car and steering is reacting badly to bumps.
I'd be pretty confident that it's an AHC accumulator prematurely ruptured or failed. The symptoms and history support this. It's rare that they fail so early but it happens. Solution is to buy a whole new set of 4, replace all, and fill/purge the hydraulic system.
Fortunately it's not really too difficult or expensive if you can source the accumulators yourself through Japanese resellers on Ebay. ~$700/set. Labor is 2-4 hrs if the dealer is agreeable to the procedure. You may find that certain dealerships who are clueless may add uncertainty/risk tax to labor which is really unjustified.