Help with Missing Monobehaviours and Asset Serialization?

So I am going to be as descriptive as possible.

I am working with people on multiple projects. We have a SVN set up with shared components between our multiple projects. If someone puts a script in this shared svn that I already have locally, and I download it into my project, I now have a compile error because two classes share a name. Deleting my local script causes any objects that reference that script to have a Missing Monobehaviour.

Currently our projects are mixed serialization, so the scenes are in binary. If we move our scenes to Text Serialization I have a script which modifies all of the proper GUIDs to reference the downloaded script instead to fix any Missing Monobehaviours.

As our projects are already set up with Mixed serialization I would rather not have to deal with switching all of them to text serialization and then have everyone update their projects.

Is there a way to using a script switch the serialization of a single asset ( a scene, or prefab) to text then read through / modify the text, and then switch it back to binary?

Any help at all would be appreciated.