Something similar:
I had an under 18's yesterday, the away team used a substitute for CAR in first half. At half time the coach took up the flag and did ok for about 20 minutes. Then we had a falling out, I was cautioning one of his players and the coach was dissenting from about 20 yards away. I actually paused the caution procedure to ask him to pipe down, no avail his protest continued, I completed the caution and went across to him, and still he went on "that's harsh, you have had it in for him and then he topped it off with there's two teams ref!" I asked for and took my flag from him saying "it's impossible for us to work together, could you nominate an alternative CAR or I will do without" and got no reply! I actually did 5 minutes with the flag on the grass before a parent came around and took over.
On reflection I failed by not issuing a misconduct report, (the two teams comment - should have clinched it). The other question was I correct to remove him without the misconduct report???
We did have a reasonable conversation at full time, I talked him through the caution decision, he disagreed but diplomatically. I then moved onto that any CAR is part of my team while he has the flag and is obliged to act as such as long as he has the flag, which he sheepishly acknowledged. I'm not sure if he genuinely agreed or dodging the misconduct bullet by having a grown up conversation. Either way feel today like he's gotten away very lightly. Sorry to hijack the thread, post is bigger than I intended