Refusal to work, which I can agree I was sitting, but there was no work to do. and I figured I could just wait for the next assignment and actually be useful. Had a full crew of 9
Assuming you filed a grievance, its the Union who has contractual onus to make themselves available for a hearing within a certain time frame contractually.
Here it is 10 days.
Aside from that, the Company has liability for your losses if the termination is not righteous, so it is assumed that they don't want it strung out over a longer period of time than necessary.