Hey now...not all Help Desk people are incompetent! I worked Help Desk for 3 years, with a very good track record. You don't last long at that job unless you know what you're doing. But I will agree that sometimes prayer seems like a viable option.
As for the real question at hand, whther or not this guy is exercising religious freedom or engaging in harrassment, I'd have to say that he is guilty at the very least of not having too good a sense of timing and of maybe being a little over-zealous. He is not on the job to promote his beliefs, he is there to work. While I believe that some people get a little too anxious to label things as harrassment, maybe in this case this guy might have crossed that line. I'm a firm believer in timing - a right time for everything - and by the results of his efforts, I'd say he missed that timing in those cases. The Bible talks about speaking a word in due season. That, to me, implies that the word thus spoken will produce positive results. Obviously that wasn't the case here.