We came from 2-1 down with 15 minutes remaining to take maximum points in spectacular style as Gareth Bale fired into the top corner from 30 yards in the 90th minute.
That was Gareth's second goal, his opener cancelled out by Andy Carroll in the first half and then Joe Cole put the Hammers ahead before Gylfi Sigurdsson struck from close range for 2-2.
Gareth's piledriver made it three wins on the trot, 11 matches unbeaten in the Premier League and stretched our run to one defeat in 15.
"It’s a massive win," said Michael, who captained the team at Upton Park. "It’s a tough place to go, we knew we were going to be in a battle in we certainly were after taking the lead.
"It was disappointing to give away the penalty and then go 2-1 down, but we showed a lot of spirit and character, which we’ve got in the dressing room.
"It doesn’t always go how you want it to, especially away from home and you need that character. Then we had a more magic from Gareth, he’s unbelievable at the moment."