[fw-mvc] nested framework calls

Hi,

I hope it's the correct mailing list for my question.

Is there a clean way to nest Zend Framework calls?

Let's say I have a modular application (calling 3rd party plugins and so on): app1.
This app is based on Zend Framework. A 3rd party plugin is also based on Zend Framework.

Problem is that since Zend_Controller_Front & Zend_Registry are singletons, then 3rd party plugin call fails.

=> is there any way to call nested (and not chained) & independent Zend-Framework based applications?

Regards,
Remy