Phil, you asked so I'm going to answer you honestly, so don't get mad if you don't like my answer.

You said in your emails to them that you're going to leave them alone. Now you're asking how you can approach them again. What was your goal in writing what you did? Were you trying to get them to reassure you, or do you really "stand by" what you said?

My advice to you or anyone, really, is to pay attention to yourself whenever you feel as though you need to make "closure" with someone. That feeling of needing closure is usually an indication that you KNOW that the other person is uncomfortable with you, and that last "closure" communication is usually what slams the door shut. If you feel a strong sense that the other person really wants you to stay away from them, IMO the best thing to do is to simply stop communicating with them unless they initiate it. Closure emails typically escalate the other person's perception of the writer as being overly intense and dramatic... and if the recipient is already uncomfortable, the closure email generally doesn't help.

Too late now, of course, but to answer your question, I think you should be consistent. If you told them that you're not going to contact them again, then stop trying to figure out how to approach them. It doesn't matter if they are 'conspiring' against you at this point. You already burned the bridge - you're on your own from here unless they initiate a reconciliation with you.