Recovery will always take time, anonymous, including and especially for emotional wounds. It’s important, for both you and your absol, to take it slow and take it easy. It might also be an excellent idea to talk to someone—Nurse Joys can provide such a service for both you and your partner if need be, if not suggest someone else who can.
In the meantime, outside of professional help, form bonds with others. Seek out a support group (both in literal terms and in the sense of a solid base of friends or family) who can help rebuild both your and your absol’s trust in humans in general. Once that trust is rebuilt, you may be able to move on and work on getting comfortable with men again, but again, don’t rush too much. It’s not unusual for some hurt to linger well past traumatic events, and pushing yourself when you’re not ready may open up old wounds.
If, however, you mean what should you do if your absol tries to attack a man on the street, again, training is of the utmost importance. As difficult as this may be, teach your absol the difference between a threat and a non-threat. Have him learn how to trust his instincts again too. His abilities are his best means of figuring out what is and isn’t a danger to you, but he’s become so fixated on what has already happened (perhaps through his guilt of being unable to prevent it) that he seems to be relying on the past as his means of judgment, not his ability to read the future. Speaking with a professional, comforting him, and retraining him, in combination, should be able to help him heal enough to learn how to use his species’ inherent powers again.
Best of luck, anonymous!
The Pokédex According to Bill 