Exactly this happened to me yesterday and I never ever saw this in all those plenty of TAF games in my whole life.
This is what I remember:
started MB via the chair, collected a single train wreck JP, lost one ball and had the two other balls cradled on each flipper
had a look on the DMD
it was written something similar like “Hit the chair to light Super-Jackpot”
had a look onto the chair and the red bulb was lightened
hit the chair
Super-jackpot was lit
collected the Super-Jackpot
Anybody has any idea?