So I had a pet in the middle of a battle, and on a turn I accidentally selected three weapons, and of course got sent to an error page that says I can only use two. I go back to the battle and I couldn't make my turn...the button was disabled. I can't find any way to cancel an in-progress battle (I thought there used to be one in case of bugs?). The pet isn't available to start a new battle, so he's still in limbo with a half finished battle :(

When you went back the page was probably cached, which is why it wouldn't let you click the 'Make Your Turn' button. If you go to the Battle Stats page and click on the '[Pet Name] is in a battle!' link, it should bring you back to the battle, and you should be able to click the 'Make Your Turn' button. If you still can't, make sure that you aren't frozen.

And for future reference, the forfeit button can also be found on that battle stats page.

I knew there was an option somewhere ! Thank you :) I'm all set :)