With Sharkscope you can block your stats by submitting your username + e-mail address.
Topshark / Pokerprolabs has an opt-out link at the bottom of the page, which leads to this info box:
"To block your username from search, please submit the request to firstname.lastname@example.org
. You will need to include your username and poker site
that you would like your username to be blocked from. Please note that it may take up to 24 hours for your username to be blocked from search."
If you opt-out, you won't be able to see your stats either.