If they were not remote-only maybe they could have pulled off the CTO's plan of hiring a bunch of traditional managers and "pushing" the company forward (probably enterprise sales), but they'd have restructure the bones of the company at great expense. The great expense part probably doesn't work, because since the sizzle is off the growth, the next VC round would be tough if not impossible to do. It would be very "term-y" and founders are already underwater enough on investor preference.
They probably made the right call of not shooting for the moon, and slowing down into a remote-only company that takes its time. Skype and boxer shorts.
But now the COO and CTO are faced with the decision of A) sitting around and riding it out at $185,000 and $182,089 per year respectively (healthy money no doubt but not DHH buy-a-racing-team like earn outs) or B) move on to the next thing while the market for vc funding is still hot and they can still get some juice from their association with buffer.
Rational decisions all around.
Oh, and Twitter launched scheduled tweets.