The defender was dismissed for a goal-line handball and, although Johnnie Jackson's penalty was missed, a Danny Haynes goal won it for the visitors.
Ref Robert Madley was booed throughout, but Dyche was more moderate in his assessment.
"I think the sending off is difficult," he said. "I've seen it again and it looks like the ball has hit him rather than him hit the ball. But what can you do?
"It's a tough call and you get away with some but we didn't. There were numerous other decisions as well.
"Referees have a tough job to do but we probably haven't had our fair balance over the last couple of weeks but you hope that evens itself out over the season."
Dyche could not fault his players, saying: "I thought they were fantastic. The standing ovation they got at the end was well deserved. When I came here I wanted to instil the pride and passion to wear the shirt and that was on show.
"We created a number of chances and took on the game with ten men. It's pleasing for me to see that the fans are seeing a team which not only plays good football but digs in as well."