Is John Edwards endorsement of Obama a "better late than never" situation?

Personally I don't think so. Edwards could have helped Obama a while ago when people were having some second thoughts of his electability in the General election over the Rev. Wright flap. Instead he waited until it was evident Hillary couldn't stop Obama by the numbers before he stepped up to the plate. I guess it's calculated politics on his part. What Bill Richardson did as did Ted Kennedy in their early endorsement of Barack Obama was principled and courageous. In my opinion to hold out this long was pure and simple positioning.