Funny thing is, if you had the chance to play him again, you'd probably win 2-0.
I went on a warpath last season in the cup because I got annihilated 4-0 at home in the cup by an inferior team, then in the away leg i went and beat him 5-0.
Shame it's happened in such a crucial match though - sometimes you haven't done anything wrong tactically, and It's safe to blame under performing players, or the game engine.