I believe the Grand Chapter was in 1967 (could have been earlier). We did desegregate in 1969 following a vote with a margin of victory of one vote (according to an alumnus I spoke with at the last Grand Chapter who was present).
If you knew the format of the Grand Chapter you'd realize that it would be difficult for just ONE delegate to stand out as a supporter of a certain piece of legislation. I'd imagine that they were lined up at the microphones. At any rate, the reporting there paints a slightly untrue picture as if Mr. Lott ran the floor during that debate or something.. which is just not true (or really possible).
I'm glad that the change occured in '69. I think up to that point we were definitely not being true to our values of Love Honor and Truth.