Shiels, who made a personal appearance at Thursday's Scottish Football Association hearing at Hampden, will now start a minimum three-match ban after a one-game suspension, hanging over him for comments made about officials last season, was enforced.
Shiels was found to be in breach of SFA rules for comments made in interviews following the Inverness match that "impinged upon the character of a match official".
One of the charges maintained Shiels had made comments in a radio interview that suggested "the match official may bear a grudge" against him were he to answer questions about Norris' performance.
Shiels also said at the time: "I went to shake hands with the referee and I didn't say a word. I kept my emotions in check as much as I could and then he said something sarcastic so I reported him.
"I don't know what he said but it was something flippant.''
Asked if he had any complaints about goalkeeper Cammy Bell's dismissal in the November 3 fixture, Shiels said: "I'm not allowed to tell the truth.
"(SFA compliance officer) Vincent Lunny won't allow me to tell the truth so I can't talk about officials.
"It is the only industry in the world where you are not allowed to tell the truth."
The SFA noted that in a newspaper article reporting Bell's successful appeal against his dismissal, Shiels further suggested Norris would not be acting with integrity if he failed to admit he made a mistake.
- Sports & Recreation