The whole thing with Mike and Larry sounds like nothing more than sour grapes to me. Mike copied Larry's designs, except that Mike's stuff doesn't sound like Larry's? Uh, okay. So they're different then? So Mike's not trying to pass his amps off as Larry's, and he's not copying the tones? He took another builders ideas and did something different with them? You mean like almost every other amp builder on the planet?
Your ideas are YOUR ideas...until you give them to the rest of the world, which is what Larry did. He may have done so inadvertently, and Fortin may have taken advantage of this opportunistically, but it sounds like that's all. I don't recall any mention of NDA or patents, or any other IP protections. When you buy a CD, you own the CD, but you don't own the song, because of copyrights. When you buy an amp, you own the amp, except any portions that are owned by the designer (patents, trademarks). Larry didn't assert ownership of his ideas when he handed them out or when he sold them. Sorry fellas, in the world of business, none of that is implied, and that's nothing new.
Yeah, life's not fair. That's really what all the crying boils down to, right? There was nothing illegal done as near as I can tell from what I've read. Maybe unscrupulous, unethical, whatever. Welcome to the world of cutthroat capitalism. It's dog eat dog, and most consumers don't care. Taking a couple of business courses over at the "annex" can save someone a world of headaches.