markuswinter,

I took a quick look at the code, and I think your original solution to delete the file may be the better choice. There is still a lot of code that isn't defined and probably compiled in by a 'use' statement.

Can you test the script in a non-destructive way?

Usually on PM we try to give hints rather than working code. In your case, it sounds like production code that you want to modify. I strongly suggest you set-up a 'sand box' (testing environment) before you modify production code. If I'm misunderstanding your problem, please correct me.

Thank you