It sounds like some NRA lawyers need to make this into a court case. He is literally stripped of an enumerated Constitutional right on the simple accusations of one person. He has no opportunity to defend himself against the accusations.
That law makes it flat simple to disarm anyone at all. One need only persuade a judge to issue a restraining order, and that's it.
If a constitutional lawyer can't get that law thrown out, he's not worth his paycheck.
As decided by 'United States v. Emerson' it's the law of the land.
NRA lawyers actually work a 2nd Amendment case? Surely you jest. NRA laywers have absolutely nothing to do with actual court cases of any kind, and 2nd Amendment cases are like poison to them.
Heck, the NRA even tried to dissuade the plaintiffs in the Parker case.
L
Been there, done that. Lost.
See "US. vs. Emerson, 5th Circuit.
Actually he won at the district court level, see here, but the 5th circuit overturned on appeal by the government. The Supreme Court declined to hear his appeal.
However both district and circuit courts ruled that the Second Amendment protects an individual right. The 5th circuit ruled that it was OK to remove the right because the divorce proceedings constituted "due process". I think their arguments were weak, perhaps deliberately so, in hopes the Supreme Court would overturn, while upholding the individual right portion of the ruling.