It would requre:
A: You push the name to RJ's account (so it has to be a registrar that can have pushes) and then he pays and then pushes back.
-or-
B: You would have to give RJ your login and password to renew the name.
Personally, I think it would be cool if it was just more secure (You could end up getting RJ's CC# if he did the renewals by CC).