Restoring badly digitized VHS

[Graven]

I have a digitized VHS (no access to the original tape) file where it looks like the field heads wobble slightly (vertically) independent of each other.  So even after deinterlacing with QTGMC there is some combing or echo (I'm not sure of the right way to describe this) that can last several seconds before aligning again and looking correct.  Is there any hope to fix/restore this?