Shanahan warned Dubas about going live so close to the failure.
His emotions got the best of him, but it could have been negotiating tactic that failed.
The one thing everyone really needs is clarity about what he asked for.
Not the money part, that's always negotiable.
It is the authority part.
If he found he was limited in his authority maybe that was the breaking point?
And if he asking for the ability to bypass Shanahan ... well that wasn't happening.
If he proved Shanahan wasn't required ... when is the last time you succeeded in getting your boss to tell his boss that his position was redundant?