Newcastle United first-team coach Chris Hughton believes Joe Kinnear had every right to feel aggrieved with the referee after being sent to the stands in the 2-2 draw with Stoke City.
The Magpies' interim manager now seems likely to be in trouble with the Football Association after being banished to the stands by referee Mike Riley.
Kinnear was sent from the dugout late in the game after furiously protesting about the free-kick from which the Potters scrambled their late equaliser.
He already has to answer a charge of improper conduct later this month after calling Martin Atkinson 'a Mickey Mouse referee' during the 2-1 defeat at Fulham last month.
Speaking about Kinnear's dismissal, Hughton said: "I think it was for perceived comments, but from where I was, I certainly didn't hear anything.
"Joe's okay, he is fine. He just felt that every now and again it is not a bad idea to have a little change of voice.
"One thing I can tell you is that it's a very, very emotional game, certainly at that stage of the game."
Meanwhile, Hughton blamed a poor second-half showing for the loss of two points as the Magpies surrendered a 2-0 half-time lead given to them by a Michael Owen brace.
"We're very disappointed, certainly after what we regarded as a very good first half," he continued.
"We felt we could have gone in more than two goals ahead. We had a couple of good chances. Michael Owen had a good chance, Jonas Gutierrez had a good chance so certainly at half time we were very happy.
"We expected them to come out firing, which is what they did do and what you've got to be able to do is defend.
"And we perhaps felt on the goals that we didn't defend them well enough."