Speaking after seeing Maynor Figueroa, Callum McManaman, and Jordi Gomez fire the Latics into the semi-finals Moyes said: "We have to pick ourselves up. We have had a pretty good season, we've not had many downsides but today is a massive one, for me, the team and the supporters.
"We didn't play well and if you don't play well you are going to lose. That's it very simply but that's the case.
"We would normally do better and play better but it was a big off day. Even when we did try to put a bit of pressure on the shots we had were wide or saved.
"It just wasn't to be our day. But I have got to say Wigan played well in the first half. They passed it well and had a good chance before they scored.
"The quick goals came and because of that it made it a very difficult task in the second half. The players tried to get back into it but the longer it was going on the more it drained away from us.
"We didn't really create a lot of chances, we didn't threaten as well as we would have liked. We tried to score any way we could but everything we hit went wide or was blocked.
"The whole team is in it together, not any one player. We will pick ourselves up and bounce back. We had disappointment last year and we will try and do a similar job and finish the season well."