It's great you put forward the issue, I'm just very hesitant to get onboard anything like this against anyone. I want hard evidence first. (in other words, no pizza bs and the likes)
I've critiqued TDV over his doom porn and support of what I consider too be witch doctors over the years already, however this is an even more serious allegation.
I probably don't have the time or energy to spend researching these claims unfortunately.
you can start with this interview from one of TDV Immigration clients: