Absolutely NOT!
How insane is it to allow a person who has threatened bodily harm to another being to keep a firearm?!? Sure, that person could harm someone else with a car, or a knife, or a 2x4, but to allow them to keep a machine which has a sole purpose of easily harming another is ridiculous.
People have the right to own firearms, but that right is not unrestricted. As soon as somebody with a firearm threatens somebody else with it in a non-defensive manner (such as, say, the guy who 'said he would “put a cap” in her if her new boyfriend “gets near my kids.”'), that right has been cast away.
Proper checks need to be put in place to make sure person A does not simply try to harass person B by claiming B threatened A with a gun when B has not done so... but once the threat has been verified, that firearms owner has chosen to throw away their right to own a gun.



The man allegedly threatened to shoot her and her boyfriend.
[Her former husband, Corey Holten, threatened to put a gun in her mouth and pull the trigger, she wrote in her petition. He also said he would “put a cap” in her if her new boyfriend “gets near my kids.”]
Do I think weapons should be removed in all cases where orders of protection are issued, no, but when there is a threat made by the subject to shoot someone, I believe the weapons should have been removed at the very least until there was a formal hearing.
The second amendment is there for self protection, NOT to allow the use of firearms as a means to threaten. By making the threat in itself, that man is in fact depriving that women of her basic right to life and liberty by placing her in fear of her own.
And the result of not removing the weapons?
[About 12 hours after he was served with the order, Mr. Holten was lying in wait when his former wife returned home from a date with their two children in tow. Armed with a small semiautomatic rifle bought several months before, he stepped out of his car and thrust the muzzle into her chest. He directed her inside the house, yelling that he was going to kill her. ]