Well although leaving a red trust does not effect like it used to be but if kenzawak get the account back and can prove that he indeed got it back then I do not think it will be appropriate to leave a negative trust since it's with him the original owner.
May be a neutral can serve as a reminder that the account was hacked twice but now it's with the original owner.
I think the primary high risk part is that they aren't here to trade and thus choose to accept no responsibility for any trades that happen with their account. Trading with them is very high risk as a result. Getting hacked twice doesn't help either.