As a Manchester United fan, I've voted to sack him.
I think the performances and result speak for themselves and whilst the squad he took over isn't exactly robust as previous United teams, it's certainly a squad that's capable of achieving better results.
Moyes' praises have been sang loud and clear for the past 5+ years because people wrongly believe that the collective players at Everton, as a team, have been over performing due to Moyes' management. Actually, if you look at Everton's squad over the years, on paper, they've had the right setup and players to achieve ~6 position in the EPL. I think this is proven by the fact Martinez's Everton is currently in or around the same position you expect them to be, whilst playing more exciting football.
I wasn't expecting to win anything this season, but I wasn't expecting to question the probability of us qualifying for the Champions League and I fully believe we won't. That's a two horse race between Liverpool & Spurs in my opinion.