What you should do is put this whole thing into perspective. The word he used is NOT taking the Lord's name in vane. That word is the name of a place that YOUR religion believes exists. It is the correct name for that place, according to YOUR religion. How can using that word be SOOO terrible that you are going nuts about it?
The much, MUCH more important thing is that you used a key logging program to spy. Your intent was to spy. That is totally dishonest, you should be ashamed of yourself. You seem to think of yourself has a person who is just slightly below God, yet you do something totally dishonest like that. How could you do that?
How can you justify your actions? Compared to your actions, his were totally meaningless.
Let me guess, you are "born again" and you are a member of an Evangelical church, right?
In Evangelical terms ANYTHING you do is okay because you are saved. You are saved because you belong to THE RIGHT church. That means that ANYTHING that you do, no matter how bad is okay.
Can you explain to us what "the severity of the situation" is? I, for one, don't see what your son did as a big deal. What you did, however, is a violation of secular law and I'm sure also religious law.
Then again, perhaps this isn't a real post. Now that I think about it, it is so preposterous that is the only logical explaination. You have been a member about a month and your Q&A is private; those are consistant with people who post troll posts.
P.S. Please point out any biblical or other respected sources that suggest your son will burn in H*ck. By the way, what/were is H*ck?