Doesn't matter which job was primary or secondary. The fact is we employed him (indirectly, through Learfield) to represent MSU. That he would then serve as a shill for OM (or any other SEC school) in his other job is inexcusable.
Him being employed directly or indirectly by MSU doesn't give MSU the right to censor speech outside of the purview of his MSU duties, unless it negatively impacts MSU.
Matt saying he believed Freeze, while a bad take, didn't rise to that level. Most people with a healthy amount of cynicism knew Freeze was a snake oil salesman but Matt didn't. He learned his lesson.
Holding this mistake over Matt's head is dumb. Just move on.