"Proof we possibly" is an oxymoron, like "60% of the time it works every time." It's not so much splitting hairs as it is attempting vainly to understand phrasing that inherently makes no sense.
I agree it was bad phrasing, that was not my point. I was simply pointing out that even though his wording was bad what he was trying to get across (Proof that is's still a viable hypothesis) was technically correct. Here i'll fix it for you "This is proof that that DNA can survive re-entry from space, due to this finding there is still a possibility that life came from somewhere else"