AJAX :: Error When Adding Handlers At Runtime

I have have two radio button lists that need to be mutally exculisve, i.e when one is clicked the other one neesd to be cleared, my further problem is beause they are in a formview I had to add handlers to clear all the controls in the other list when the one is clicked and vice versa. here is the code below Now the code works but one of the testers found that if you click back and forth around twenty times you get the above java error:

Exception message: Maximum request length exceeded

my though here is the handler is being added to many times ? but even if I remove the handler after the process is complete I still get the same error.

[Code]....