I think the decision to sack him was pre-planned weeks ago. That's why we're hearing about the structural changes, including the removal of Scott Munn (an Australian, who brought Ange here, by the way) and the appointment of Fabio Paratici.
Sacking him now, though, would be very problematic in my opinion. Although it might be a rational decision, he's the one who gave us the best moment this club has had in about 40 years. Just look at the parade today — it was bouncing.
Football is all about emotion. Sacking the man who brought that emotion is causing division among the fanbase and also among the players. It would take a top hire, like Inzaghi, to get everyone on board again.
That's why Levy is in a tough spot now. If Paratici comes in, I think Ange is 100% gone. But if Levy suddenly goes with the vibes, rejects Paratici, and meddles with Vinai, it would show his incompetence and reactionary nature.
Ange knows this and is applying pressure with statements like that. He knows that suddenly, momentum is with him. The next few days will be interesting for sure.