I have in the past on other things he's done and will take your tip and pull him aside for the current events. Like I said, he's a good guy, really great to work with but right now, not really good to work under. He's learning so I take most things with a grain of salt but recently, he assigned me a ticket that was overdue so that he won't have it which would ruin my SLAs. This is after our department meeting and him constantly sending emails about overdue tickets.
As far as a form of management's concerned, I don't want to be in any leadership position, just want to be a tech. I was a leader in the military and that was fine for me since we all know what to do, took and executed orders. In the civilian world, there are so many gray areas and politics involved that I rather not partake in it.
I am in a similar position - I don't care for a managerial role either, as I have trouble delegating. But Leadership and Management are not synonymous (despite corporate culture often doing so, mistakenly in my opinion). Time in role (and in life) can lead one into a leadership position, because others will model themselves on your behaviors.
The overdue ticket is pretty unfair, I will grant, but that's something you can bring up to him privately at first - document your objections to that behavior, so that you have a record, even as you complete it.
One way to phrase this might be "Prior to you taking on a managerial role, you would not have appreciated me giving you a ticket that was already overdue. If our roles were reversed, would you feel OK if I took the same action to you?"
Or, cite the other clients for whom you had tickets, indicating that due to this new ticket that is behind, you're also going to be later than you had wanted on the other ticket.
Alternatively, you could cite the meeting you mentioned, and indicate that what he said in the meeting and his action here seem to not match.
It just may be that he gave you that ticket because he knew that you were the person who could deliver the best, fastest solution. Having him state that, up front, would help.
IF that won't work, does your company do skip-level discussions (where you can talk with your manager's manager)? You can bring that situation up and indicate that while you want to help, you feel as though you are being punished for doing so (or some such).