For the last month, I've always had a 1 turn waiting notification there even when I didn't have any turns to take. Mentioned this in a board message feed and a couple others said it was happening to them as well.

Today, it changed to now say 2 turns waiting. Again, I am not up in any games right now.

Is there a way to clear this?

Hi mco, I believe a "Clear Chace" button in your profile area should take care of them problem.... I think. lol

yup: 
http://www.wargear.net/wiki/doku.php?id=general:faqs#the_page_says_i_have_1_turn_waiting_but_it_is_not_my_turn_in_any_games ;