Fredi was sent off for his reaction to a late, off the ball challenge on him which referee Dermot Gallagher didn't spot, and now faces a three match ban starting with the vital clash at West Bromwich Albion in two weeks.
He says: "It was a bad day. There was provocation from him and I just lost it for one second, which was enough.
"He started it and I think he should have been sent off as well. He came in very late and kicked me on purpose.
"I reacted to what he had done and I raised my hands on him.
"I felt bad when I got sent off but I didn't think about him, only me and my team.
"It was a poor game for us, not very poor, but personally it was a bad day.
"It doesn't happen often to me but I just lost it once.
"I was a bit angry and it was a bad reaction - I am normally calm but something bad happened to me.
"I don't think the referee saw exactly what happened. I accept the decision because I deserved it, but I think he deserved it as well."