Mojo, Could he be trying to control his own sexuality, as opposed to trying to control you? Sortof a way of saying, This belongs to ME not you, Mo.
I don't think that my H would ever withhold sex as a way to act maliciously towards me, or even out of resentment--honestly he is just not that complex, he is much more simple than that. But I do think that he, like a lot of men, reacts VERY strongly to the thought of being controlled and will withhold from me what I want if he thinks that I am being manipulative in getting it. Which I have been guilty of, more times than I could count.