Jack was booked after celebrating his equalising goal and picking up a second yellow and sent off for a tackle on Gary Hooper.
Craig Brown claimed that Celtic defender Charlie Mulgrew had escaped punishment after celebrating his winner. He told BBC Scotland: “We have a man booked for that and Mulgrew, with a similar celebration, is not booked. It’s not a bookable offence to leave the field of play I understand. He (Jack) did no harm to anyone.
“He quickly turned, he went off towards the fans to celebrate. That’s an instinctive thing, you go to your own fans, and he turned back in again.
“He hadn’t to be shepherded by any steward, the stewards were there certainly, but they hadn’t to push him back on. The referee didn’t come and tell him to get back on and then he was cautioned.
“They (the Celtic fans) were within touching distance, the fans are actually touching him (Mulgrew). The fans weren’t touching Ryan Jack.
“There’s an inconsistency there I’m afraid that we have a man booked for that and Mulgrew, with a similar celebration, is not booked.”
However regular Scotzine photographer Patrick McGuire who was on his day off at Celtic Park yesterday, begged to differ with Craig Brown and has provided the photographic proof that Mulgrew was indeed booked for his celebration.
Jack is now banned for two matches, after picking up his second red card of the season, according to the SFA.