Fat cat, I doubt that Charter intended to take over as CEO.
These is what I think occurred.
Charter has ideas about a saliva test using DR70. He has never done anything with it most likely because he has ideas but seldom executes. He did steal money back in 2001 so I supposed he does execute once in a while whether it is well thought out or not.
Anyway, my guess is that he knew Radient was in the process of dying and Mac had given the technology on DR70 to a couple of companies. I think he approached Mac to see if he could also get the same technology in case he ever did anything with his spit test. At this point, Mac has just squeaked by and escaped the class action suit and DR70 was about to go off patent. Mac just probably offered up the company and Charter could do as he wanted with it.
Charter enlisted his buddy from prison days to help. Brown has a lot of websites he has created so I suppose he just did one more in case they wanted to do something with Radient. I would bet that was the first time Brown ever looked at Radient closely and quickly saw it to be a lost cause.
I would bet that anything of value that could be quickly sold is gone from Radient and I also bet Charter and brown ended up taking what they could from Radient. That is the basic premise that gets most people in prison.
Nothing more is ever going to happened with Radient.