I have no idea if this is likely to help, but since I want to get Rameses through the spring breeding season without either of us getting hurt, I am trying something that may or may not help, but probably won't hurt.
When going out to close up, I'm picking him off the roost and carrying him around for 5 minutes or so -- talking to him the entire time.
It *might* (or might not), help convey the idea that even when I'm doing odd things I'm not a threat.
Then, when I'm done, I put him down on a different part of the roost than he chose.
The chance of conveying much to a bird whose testicles are larger than his head is probably slim, but I feel better about doing this than about trying to chase him, carrying a rooster stick, etc.
I will continue to walk through him and the young cockerels, as always.