It's as aprilp_katje predicted: RePhil leaves but makes sure that MikeClone grows up to be an emotionless dick.
Panel 1: A weeping MikeClone tells RePhil he doesn't wanna see him go.
Panel 2: In an effort to avoid complicating his departure by dealing with those messy, unnecessary things called feelings, RePhil tells his nephew big boys don't cry.
Panel 3: As we pan out to see the rest of the family, MikeClone considers this....
Panel 4: ....and asks a flabbergasted RePhil how big big is.
Summary: Jazz Guy might think he's helping here but when you realize that Mike grows up to be such a cold fish that he can't even stand to show his wife and kids affection, you realize he didn't. Good thing he never inflicted himself on kids of his own, right?
ETA: Elly's Coffee Talk Blog has joined the rest of the site in paying homage to the new format.