I'm going to call it now.
1) 99% chance that Eric Alexander is bluffing about legal actions to scare Erin and Amir to take down their review. At best, he consulted his attorney and his attorney told him to let it go. If he insisted, his attorney would try to put a case together but after they reviewed what Eric had been going around yapping about, his attorney most likely cringed and said, no, I cannot represent you. The reason why Eric bluffed so hard is because it worked for him in the past.
2) 55% chance Eric does not have any measurements at all of his own, I'm even tempted to say 75% chance, but I want to be conservative. 44.999999% he has basic non anechoic, non quasi anechoic measurements, probably something like in room REW measurements. .000001% chance he has anechoic measurements, where he sent his speakers out to a lab for measurements.
3) Eric Alexander is beginning to realize not only his threat didn't work with Amir, he is taken back by (a) Amir's gangster response, essentially telling him to shut up and crawl back into your hole and (b) that the public is coming to the defense (and financial support for legal representation) of Erin. He is now very concerned that Erin is about to publish a revised measurement, which 99% chance will not likely change much. He is worried that his BS will further be exposed.
4) Eric Alexander's backup plan is likely some BS, like he intentionally poke some holes in the speakers to bait reviewers who didn't get his permission to review his products.
EDIT: This lesson that Eric Alexander learn will be very humbling for him and the humiliation for his bluff being called will haunt him for the remainder of his business days.