I actually think something2say has good advice.
I have found it really helpful to think about those feelings you have when you can't shake off someone you don't fancy.
Yeah it's embarrassing and you'll cringe at yourself - but that's why it bloody works!
I broke up with someone and found a couple of really good reasons to text him. Funny stuff, clever stuff - how could he not get the text and think "oh I'm an idiot - she was great, hope she'll give me another chance!"?
There's a bit in the book "He's Just Not That Into You" that really struck a chord with me: he doesn't need reminding how brilliant you are.
I know I've done that in the past - the little thing that'll make him wistful for me. Or plain horny for me!
But then I dated this guy who then found reasons to text me. And they were kind of fair enough - related to in jokes, funny enough. But it was transparent - he just wanted to rekindle things, and I felt embarrassed for him, and awkward, and eventually "oh fuck off why don't you?" 
Of course I finally realised that these clever funny little missives of mine looked just as obvious and desperate and... well, I was mortified. Cringe thinking about it now! And since then, I've found it much easier not to do it!
And that lack of contact helps you move on so much faster.
So - embrace the embarrassment! Realise that you're making yourself look a dick in contacting him.
They don't need reminding how great you are! If they actually think that, they'll be beating a path.