Loading Flex SWF to AS3 project

I’m trying to load in swf-s created with Flex to a simple AS3 project but the catch is that they have to be garbage collectable.

The loading and displaying is not a problem but removing from memory is harder. I don’t know of any Flex built in function for reference removal but it would be nice.

The other thing I tried is loading in just Flex modules with some success but making them fully functional would be a lot of work.

Any ideas would be appreciated.