BTGuy, if someone is a rashah, he is a rashah. “Only HaShem can…” – is a false shittah.
This may be an argument between R’ Moshe Feinstien zt”l and the Brisker Rov zt”l — R’ Moshe says one can use a tinok shenishba for a minyan (although apikorsim cannot be used), whereas the Brisker Rav says that “A nebecha apikores is still an apikores”.
Actually, I think both of them will agree that he is not a rashah if he is a tinok shenishba.