The Hammers hit three second half goals in 17 minutes to shell-shock Gareth Southgate's side who will have felt very hard-done by after creating many chances to have won the game themselves.
Curbs said after the game, "We needed a quick start to the second half in order to raise the tempo.
"Straight from the kick-off, Lee Bowyer gave us the perfect start with the sort of strike that he has always threatened to get, while Dean Ashton's goal has done him the world of good, too.
"At 2-0, however, we tried to commit suicide by playing for offsides and we were fortunate that Tuncay missed some good chances.
"We got lucky on occasions and Robert Green had to make some great saves.
"Afterwards, I said to Gareth Southgate that it was all about chances today. Fortunately, we took our opportunities but Boro didn't take the ones that came their way.
"After an international week, there were some tired legs out there and, like
"Once again, we can go away and enjoy another weekend before looking forward to the trip to