ok, well regardless I don't think your theory makes sense even in light of how it happened. There wasn't a card that said La La Land won and then they changed it. Or had multiple cards for Best Picture with different winners. The card the presenter had was for Emma Stone, who was in La La Land, so LLL got announced and it was later corrected.
Actually it was warren beaty and he wouldnt let go of the card.
You can believe what you want, and so can i.