I'd say "wrong". The "help but" pattern takes a bare infinitive.
Expressing myself strongly on this subject is something I can't help but to do.
Google probably counted all manner of combinations where the constituent structure was different as in:
I know she was just trying to help, but to speak so rudely was really not necessary.
Tres chic, n'est-ce pas?
Google doesn't respect punctuation or any other barriers between sentential constituents.

CJ