He was correct that changing hand positions had a positive effect and a minor imposition. If they had recalled the phones I wouldn't have sent mine back the iPhone 4 was great and I was a satisfied customer. This was a long time ago and it is probably time to move on.
That article and your memory glosses over the fact that Apple redesigned the antenna to fix the actual problem in later devices - the antenna was changed in the Verizon iPhone 4 (which came out later), as well as the iPhone 4S and all subsequent models.