the fact alone that he was going to hurt you is enough to justify why you SHOULDNT taken back your statement. He has a problem with his temper, let him get help for it, lrt him get punished for it! domestic violence is a serious issue, no one should feel scared in their own home. if this is his 1st offence then chances are he will only get a fine and probation, perhaps community service too, and rightly so. That in itself, if he truley is sorry will teach him never to raise his hand again! also i would like to tell you that the police have new laws now to go ahead with prosecutions without your consent, so retraacting your statement will make no difference. If there is substantial evedence that a assault has taken place then thats all they need. in some cases. Iwas told on one occasion by a female liasion officer after my partner assaulted me, that because of the number of many abused women retract there statements, out of fear alone, the police will go ahead with the case regardless to get a conviction on the victims behalf.
under no curcumstances should you say it never happend as you will face prosecution for perverting the course of justice, and possibly face a prison sentence yourself. At the end of the day your partner did wrong, he should suffer the consequences.