The majority of the fanbase wanted him gone. The players literally stopped playing for him. There's no coming back from that, regardless of whether we gave him time. It was the right time for him to go.
The big mistake was replacing him with Jose Mourinho.
Erm, yes there is. The majority of Woolwich fans wanted Arteta out and then he's delivered a title challenge. Liverpool were just as bad as we were but stuck with Klopp, albeit he still had fan support but we kneejerked on Poch & paid the price with instability since.
He MINIMUM deserved a full season to turn it round after delivering a CL final & 4th. It was a terrible decision to sack him, and then even worse to replace him with Jose.