Perhaps getting lost in this talk about how you gotta be pretty confident in a fold is that V2 found someone who gave him one
Of course, he then opened his mouth to kill all doubt, but J86dd appeals to a lot of drawing hands that don't include an Ace, and the delayed shortstack shove is nothing we aren't familiar with.
It might not be a good play here, but I love that it happened. It totally changes the energy of the table. You also have to factor in tilt equity from V1 and the aforementioned fish retention equity from V3. I've definitely bluffed at dry side pots for similar reasons and with decent results.