Let the poll decide. That's what it's there for. Whatever the majority says, stick with that, no exceptions or probation in my opinion. These aren't two new people to this community, it's not like someone made one mistake, this is being brought up because they've proven themselves shady time and time again. Seriously, would this be such an issue if it was one or two times?
Let the poll decide and leave it at that.
I'm all for second chances, even 3rd chances, but as the list of indiscretions pile up it's harder and harder to just forget all the douche-baggery and act like nothing's ever happened.
I for one have no intention of going back to that other site. This site is superior in every way, why would you even care about those people or what they do? Just don't let them mess up our site now... contain it to that site and move on.