Actually, that's not a long stretch -- it is what they teach ont heir website and group buildings:
they twist their weasel-words as "First between true and false conversion. The Bible recognizes that not everyone who says he believes in Christ really does"
Voilą! (by the way, that means "see there" in French) -- the followers of Calvin-Machen use their rubber dictionaries to say "Oh, they never were Christian in the first place!"