I wrote a letter of concern to his Bishop (Chaput), who was also his employer at that time, expressing my great concern about half a dozen of his strange remarks.
The only reply I received was a six page, single-spaced diatribe from West accusing me of being a bad Catholic for doubting him. It was harshly worded, and left me a bit shaken that he had my home address from the letter.
There was also some concern expressed about him by a few theologians a few years ago, rather mildly phrased considering what I had seen from West's work, but nothing seems to have come of it.
Christopher West is so pro-abstinence — that this could hardly be the way he would go about it. All his teaching is based on Pope John Paul II’s Theology of the Body. Check out the links above.