Flowery's arms were cracking when the Knight was pressing him with a sword. I think in the light world equivalency it means that he was cracking the glass the flower was in, then after breaking it they cut the flower
did they secretly get Carol's code off screen that night or something?
Also send pics/fanfics about it if there are any
Moreover, Lelouch even lied that he did it on purpose. What's the benefit from it? If he told Suzaku that it happend accidentally, maybe it'd be a relief for Suzaku and he had a little more compassion for Lelouch. If not, I don't think it'd be worse.