Hi Jason,
I had a feeling that since the Bassplayer outing that you'd probably ask for submissions before going to print and it sounds like you tried your best. Sadly there's not much you can do if an editor won't play ball.
My immediate thought was the obvious letter of complaint to the Ed in Chief, but then I remembered this incident....
I wonder if anyone remembers a review by Bassplayer magazine many years ago of a Benavente Bass (I think it was a 6string, bolt-on). The reviewer exclaimed the bass as truly innovative for its extended neck/single-cutaway body design, the very same design made famous by Fodera and subsequently copied by almost every Bass guitar luthier the world over.
AJ's Single-cut Contrabasses were the first ever to employ such a design, therefore he had every right to feel incensed at the review. The following month AJ wrote to the editor to complain that the design was a direct rip-off and could not be credited to Benavente, but to Vincent Fodera the originator. Now, If I were the editor in Chief, who had received a letter of complaint from such a highly regarded artist as Anthony (who also happened to be a contributor at the time), I'd certainly take a smack on the wrist and publish an apology.
I bought the magazine for the next two consecutive months expecting to see a printed apology, but there was nothing "No Reply" whatsoever. Admittedly I skim the magazines when I'm in a bookstore and there might be the odd article of interest, but I decided to vote with my feet and have not bought "a single" copy of Bassplayer since. BTW, I bought the magazine religiously for many years when it was GuitarPlayer.
A little OTT maybe, but that's me..
Easy.