Van Gaal added: “When you have to play 60 minutes with 10 players, I don’t think we were so uncomfortable.
“The loss is a big blow because it was not necessary. When you see the first half it was not necessary I think.
“I don’t want to say we deserved to win, but we didn’t deserve to lose when you compare the chances West Brom had to ours.”
Baggies boss Tony Pulis said: “That was a big win for us and the sending off played a big part.
“That takes us to 39 points, but I’d like one more because when you are in charge of teams toward the bottom of the table you always worry.
“It can drive you insane at times, you just never stop worrying that things could turn.”