I feel pretty strongly that most athletic directors would take that approach and do not want their coaches acting like lunatics on Saturdays. The perpetual fear of losing your job that assigners and officials embody all too often is really far-fetched. The idea that conference leadership is going to threaten you with your job because one of your officials had the gall to enforce sportsmanship is really ridiculous.
I guess it's a good thing I don't call NCAA football because no coach would get away with this behavior in my games. And it's funny, I have never been afraid to penalize misbehavior in the college basketball games I work - not once have I lost games or been threatened with losing games because of calling technical fouls on coaches. I have been kept away from certain coaches - mainly because assigners don't like to put their officials in a no-win situation - but it was never because I was "wrong" to penalize said coaches. I have lost games before because of mistakes I've made but never because "you T'd up that coach and he complained, so I'm taking away your next game."
Upholding sportsmanship should not be a controversial topic - it's plainly there in Rule 9.
Nothing has changed, still the ONLY thing you can count on, from ignoring (allowing, tolerating, condoning) really BAD behavior, is having to deal with more of it. the response doesn't have to be an atomic bomb (except when that level response is called for) it can be incremental, but consistent. A cold look (like your mother's cold look) is a place to start, maybe a second one if necessary. then a PRIVATE face to face instruction, asserting that further examples will NOT be tolerated, if there is a repeat behavior, a hammer.
A hammer can be a flag (without further explanation or debate), or in rare cases when a response is excessive, an immediate disqualification (again, with no explanation or debate with the offending party). It's the responsibility of the School Admin, or Game security to remove DQ'd people.
Whenever possible have a crew member close enough at hand to witness all discussions, to support your likely necessary write-up.
Such behavior should NEVER happen, but when it does, stopping it "sooner" is ALWAYS better then allowing it to escalate.