Bruce,
I had a male that did the same thing. However, if I came back in the morning, he would typically be locked up with the female. I would have to see what heis doing to get a better feeling for what is going on. I did make an assumption, in that you introduced the male into the female's enclosure. I would suggest that you try to introduce the female to his enclosure, and he may not act that way. I definitely would not retire him yet, as you have plenty of time to try a few different things.