Having watched countless slow-motion replays and different camera angles, my opinion of the incident... remains exactly the same as when I watched it live.
This is how I saw it unfolding as it happened and nothing I've seen subsequently has changed my mind:
• Cav was on Demare's wheel, but Demare was starting to pull away from him. Cav was already out of the race.
• Sagan saw Demare coming past and thought there was enough of a gap to jump onto his wheel but hadn't seen Cav coming up behind.
• The two came together, usual sprinters' argy-bargy, unfortunately Cav was hard up against the barrier with nowhere else to go...
Sagan may have been at fault - that's for the jury to decide and I'm glad it's not my call - but the DQ seems harsh.
Anyway, the race moves on, and today's finale should hopefully see some fireworks of a less controversial kind.