Thanks, sometimes a letter can do wonders.
I opened it up last night. Roland replaced the middle (main) circuit board that the input jacks are attached to with a new one. The input jacks appear to be the same ones used previously, without the small tabs that would fit into the existing mounting holes on the board. I don't see evidence of glue of any sort securing the jacks, just the four solder joints to the board trace pads like on the original board.
I couldn't find my magnifier to really take a good look at the solder joints, and I'll probably just reassemble it so I can use it tonight, but I'm now back to considering what to do to beef it up to avoid another failure. Maybe hot glue, maybe epoxy, maybe a tiny wire-tie around the board holding the back of the two jacks down to the board, maybe send it off to schoepsnbox to do his thing on it (wondering what that is).