He admitted wrongdoing to settle the lawsuit that the company had against him, and it wasn't his first rodeo in getting sued for theft as you can see with the Department of Labor issue.
Any one else notice that Weitzel issued a confession and apology in the lawsuit, but shareholders never got to read it? Why is that? That confession was to/for us as we own the company..... (side issue)
So really, I have no idea why Sym worked with him. It wasn't for his revenue though, because he had none when they merged.
I suspect it was because Weitzel had built a company before that was successful in Ad-Tech, and Sym though he could do it again under the public guise and get rich off of the free trading stock.