Yappari doesn't upload any of your private information to Whatsapp servers. It just queries "what is the status of number +x?" and the server says "status is y" or "user not registered". You can even do it manually using curl or wget. That's not a violation of your privacy, Whatsapp can't save the numbers there's not way to relate them.

And like I told you before each one of your 1161 contacts is the contact of somebody else that use Whatsapp, which is querying those numbers anyway.

Also and as a final note, if you are really making a stand that Whatsapp Inc is violating your privacy then why are you using it? That's double moral standard what you're trying to do (cheating, registering with a fake number, etc). You should try to convince other users not to use it, instead of trying to cheat Whatsapp. Don't you think?