I agree, the Boas sacking was quite harsh. Not to mention now this will severely destabilise the entire squad. Second-rate 'caretaker' managers never really do well to be honest.
They're not even doing that bad. Sure, they did lose pretty shockingly against Liverpool (Grr...) but overall they're doing pretty okay. Sure, they are seventh, but their above United, which isn't exactly difficult, and they are only a few points from Everton.
Even if Boas had to go, at least wait a while. They now have to start of the second half of the season with no manager.
Hardly a good way to begin proceedings.