He legally bought them in Co but was not legal with them in NJ where he transported them to.
Sucks, but not legal in NJ.
from your link:
Buried in the trunk, beneath piles of clothes and boxes of dishes, was a black duffle bag holding a boot box containing two handguns; "unloaded, disassembled, cleaned and wrapped in a cloth," his father said.
There were also several large-capacity magazines and cartons of hollow-point bullets.
Aitken had legally purchased the guns at a Denver sporting goods store two years earlier, he said.
But transporting a gun without a special permit or in a handful of exempt situations is illegal in New Jersey, giving officers no choice but to arrest Aitken and charge him with a crime. The magazines and bullets are also illegal in the state, experts said.
Apparently you like to pick and choose when you peruse a news story.
"As anyone who has moved cross-country will tell you, it's a messy process," Larry Aitken said. But the judge in the case did not allow the jury to consider the moving exemption during the trail, ruling that no evidence was presented that Aitken was actually moving at the time the guns were found. Aitken did not testify in the trial.
"The defendant's attorneys presented evidence that his house was for sale and that at the time of arrest he was travelling from one residence in New Jersey to another," Joel Bewley, a spokesman for the Burlington County Prosecutor's Office, told ABC News. "Those points do not establish that the defendant was moving."
He was unable to provide the affirmative defense that what he was doing was completely legal, or even mention that he had contacted NJ state police and asked about the laws, which is why they were unloaded and disassembled, which is one of the handful of exceptions to the law in NJ you quoted.
That, in case you are wondering, is a perfect example of confirmation bias. You knew he was wrong, and you found only the facts that supported your belief.
If I'm reading this correctly, the exemption is for when you are in the process of moving from one residence to another; based on what was said, they mean when you are actually physically transporting things from one place to another, not during the entire process of the move. I imagine that would be because a person could take months to complete a move if they wanted to, and be exempt the entire time. But if the exemption only counts during actual physical transportation of property from one location to another, that's not so much of a problem.
So, based on the information provided, he was unable to prove that he was in the process of transporting items from one residence to another, therefor ineligible for the exemption, and so not allowed to use it as part of his defense. It does not sound as though they prevented him from presenting evidence that showed he was eligible for the exemption.
I'm not defending the morality of righteousness of NJ's gun laws. I just think you are misinterpreting the information provided.