Looking at the issue, just in general terms, I think it is bad policy for the league to allow coaches to jump ship during playoffs. Sorry. If the acquiring team is still in the playoffs, it shouldn't be allowed. Of course we are talking about a league that turns its back on player tampering...so why enact another charade. But can't you see a scenario where playoff team A approaches a team out of the playoffs and says, "Let me hire your guy for the short term and we can work out compensation." Can O' Worms...I say
A ban on hiring would have to be leaguewide otherwise the Patriots would have been barred from hiring McDaniel while the Chefs were offering him a deal.
Beyond that this stuff goes on all the time and there were writers crowing about how awesome it was that rex Ryan was using his brother to collaborate on a defense to beat NE in the play-offs last year. Coaches are always going to use the people and information available to them, and their pals are going to help them as much as they can, short of a leaguewide ban on everyone and anyone talking to each other it will always be this way.