Gentlemen, before continuing, I do understand the importance of V1 and SOPS', however, in many cases where there is a long runway, the V1 call is rhetoric (yes, I know its importance) because the rotate call is 1 knot beyond that. In other words, the rotate speed has been reached before the critical point on the runway where there is insufficient length left in which to stop. Obviously, that was the case in this instance.
Perhaps that may have influenced the PF in this case? I know it shouldn't have but that is another matter.