Deleting forms can obscure the problem, especially if code in one form refers to an object in another. Rather than deleting forms, I would start by block commenting all the code in all the forms except Sub Main. Then add back in one form at a time. You might then get errors when the active code cannot find a particular function. All you need do then is uncomment the called function. Tedious, but do-able.
Another thing you might try is searching the obfuscated code for the offending characters - "w0" - to find where it appears.