Yes, he must reply within 2 weeks. That includes giving the horse back within the 2 week time period.
As for what I am looking for, right now I'd just be happy with Max back, but I feel the need to prosecute both of these men as another person may simply fall back and let it happen.
What a jerk! I hope you nail him good. Maybe you can resurrect any old laws about horse thieving and get him publically flogged? (Wishful thinking, I know...)