Ravel Morrison gave the Hammers a first-half lead with his fifth goal of the season, which was cancelled out by Gary Hooper's equaliser 10 minutes after the break.
He told Sky Sports 1: "After the 7-0 defeat to Man City last weekend it just showed the character of these players and everything about us...fantastic club, fantastic fans and a fantastic spirit and we needed that result.
"In the first half we didn't get going and we changed our shape and went to two up front.
"West Ham knocked the ball about really well and it was hard to get near them at time.
"We had a few feisty words at half-time and we needed to relax and take it as every other game, and I think we rolled our sleeves up and we deserved the victory."
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