Although I have issues with anyone that would buy Nazi memorabilia (I am not Jewish, but I am human), I agree that his intent probably isn't to take this small sword he bought and go on a stabbing spree. That won't matter though; the moment a pre-trial services officer sees this thing in his house during routine searches that are usually a condition of federal bail, his bail will be revoked at a minimum, and he may face new charges.
He's going out of his way to thumb his nose at the Court; they tend to frown on that.