mod_perl debugging application debugging in shared environments

I'm running in a shared development environment. I can't run httpd in 
non detached mode on that machine because the server is used by other 
devs at the same time, and there is absolutely no way I can get my own 
sandbox set up. Is there a way that I can run an interactive debug 
session without running http -x? I'd also like to know what are the 
reasons of such limitations (if there are any), and if there are any 
viable workarounds.

I'm willing to invest time into adding the required functionality into 
mod_perl/Apache::DB if necessary, so any pointers into why and how, are 
greatly appreciated.

Thanks,
Dmitriy Ryajov.