I would disagree with this. Solid Snake sold his JH customs and JH Audio told him the same thing, they don't reshell and probably told him also that it would destroy the drivers. He sold his and I believe the buyer got them reshelled at Unique Melody. I sold my JH5 custom too and Unique Melody reshelled them. I would ask Dale why his drivers would be damaged and other custom drivers are not. In fact, you could probably PM Average Joe and he could give you an accurate answer.
I just checked with Unique Melody Stephen Guo about reshelling the AS2, and his response is:
"I don't recommend reshelling either. Some manufactures (only a few), uses special glue or fills the entire shell with acrylic that's extremely difficult to take the drivers out. Thus, they may be easily damaged through the process. "