There's barely a dull moment at West ham these days as results vary from emrrassing (0-5 vs Fulham, 1-5 vs Liverpool) to impressive (3-0 vs Wolves and a comfortable 2-0 vs Freiberg).
As a result, more temperamental fans have swung from 'he's a genius' to 'please rid us of this outdated management', with barely a pause for any middle ground.
Perhaps Moyes has become infected by the thrill of uncertainty, because in surrendering a semi-final place in a very winnable Carabao cup, he planted all his eggs in the basket labelled 'beat Man united'!
Failure to get a result today will push many observers over the edge and add to the questions around Moyes tactics and overall game management.
But a cold analysis of Hammers recent form must include two key observations; (1) Wolves and Freiberg were home games, while Liverpool and Fulham were both away, and (2) against Fulham we had players out or below par with a squad virus and against Liverpool we omitted the central axis of our side by not starting Zouma, Aguerd, Paqueta and Ward Prowse.
So cheer up Hammers fans, we can expect a committed performance from our best XI today, against a faltering Man Utd.
Anything less will tip a lot of fans towards a new set up.