They didn't leave at the same time... they just announced their departure in a generalization that seemed like they all left at the same time.
It was gradual and spanned about 4 months as each of the three stepped down, however they were on the fence about leaving and decidedly called it "Semi-Retired" now they're all pretty much fully retired except possibly Mav-X who is like 3/4s retired, lol.
SP is still helping me set things up, so he's kinda like my consultant right now, lol.