There was a case when guy needed liver transplant after 1 month of superdrol. No, wether it was "contaminated" or not is irrelevant, "dirty gear" won't hurt you that fast.
"Prohormones" (they aren't literally prohormones, they should be called designer drugs) are for morons. How can you take something that is totally untested? Steroids were used in medicine and veterinary for decades, we know everything about them and we know how to battle with side effects.
I know people who took tons of dianabol, winstrol, on and off and test, deca nonstop for years (sometimes as long as 8 years of blast and cruise) and they're perfectly healthy. On the other hand many people had serious health issues after 3 weeks of superdrol or trenadrol. That's simply not worth it.
Having said that, Vince is just as delusional as Genova and I wouldn't be surprised if he made that up. I won't bother looking for that moron's fanpage on fb tho.
I find it pretty ironic that Vince is going after Genova now. Both look like they never touched a weight in their life and both "competed" making fools of themselves.