I (Nasr Abu Abi Bakr) just spoke to Shaykh Khalid today (2/29/16). I asked him is it permissible to warn against a Salafi who's known for Salafiyyah, who defends Salafiyyah and is known to the Scholars for it?
Answer: By Allah, tell this one to fear Allah and that it is not permissible. If he speaks like this, then he is speaking from his desires. Tell him to fear Allah!