I think that was part of an aborted angle that was supposed to trigger a feud between Val and Edge. This happened in early 2000, right? As I recall, Edge got busy with the Hardys/Dudleys feud and Val just kind of treaded water for a few months until turning heel.
Russo was long gone by then but I guess it could've still been his idea.
Edge explained on Observer Live a long time back that it was to be the start of an angle and Val/Edge program. But Val got hurt and E&C/Dudleys/Tables was getting so much heat that E&C joined the tag feud with the Dudleys and Hardys.
From what I recall being told on Off the Record with Edge that time, Edge's best man was his longtime friend Jay Reso (Christian), and Sean Morley was one of the ushers, still in the wedding party. (As if they could've kept him away).
Obvious question coming out of the interview: Who was the guy they originally tagged for the Inside Out role? Mr. Anderson perhaps? Not sure when it was filmed but I imagine it could've have been sometime around when Anderson left.