Hi,
I'd probably bet the turn myself when SB checks, and then assuming MP2 folds and SB still jams I'd hate it.
As played I like your fold, SB's stats already say he's calling too much so he can have 8x there with medium suited connectors, and given his line frankly I think he had you beat right from the flop, so in a sense you not betting make you save some money (which MP2 lost for you

).
Hope it helps.