well, we forced a password change recently, so if you changed your forum password you should be fine, there is still no correlation between your wow account getting banned and honorbuddy. if you think your honorbuddy account was compromised (buddyauth or forums) change your passwords and lock it back down. as far as wow goes if you weren't playing then send in a ticket so they can investigate. however you need to keep in mind that its only 6 months and if they look into your account and say it was from the bot (say in the event they were sitting on the account for a while before deciding to temporarily ban it) then you run the risk of them applying a perma ban and from there you can never get it back.
so its up to you to weigh the risk and decide what course of action you should take.