Same problem here. Got like-spammed from turkish accounts. I tried to remove the likes manualy but after around 200 removed likes, the like list was displayed as empty, although the site still has over 10,000 likes...
So FB seems to have a reload prob or simply doesn't wants you to see all people who have liked your page?!
Now I blocked Turkey in the settings. I'll report if this will help to remove the likes but it seems like it could take a while.
Still no other fast way to remove 10,000 likes?