I'm think I'm sufficient competent, because I'm learning from my mistake/forgetfulness; but someone make me really trouble. Thanks again to the community.
What happens when your mistakes/forgetfulness cost someone a lot of bitcoin or the admins don't step in (which they luckily did for you in this case) and the account is forever ruined or perma banned? Can and are you prepared to foot the bill? You need to take that into consideration because being an escrow isn't a responsiblity or worry-free job as people are depending on you for a smooth and safe transaction and you need to be able to guarantee this from your end.
From the looks of it many inexperienced traders seem to think that being escrow is a very easy job with zero responsibility nor worries. When people like Dabs or tomatocage handle an escrow a lot goes on behind the scenes that cannot be seen by the public.
I would say that you were essentially given a free pass in this situation and doubt that BadBear will make it a regular habbit to unban accounts that are suppose to be in your control.
There are people that will try to scam even when using escrow and it is up to the escrow to catch and stop these scams.