it is difficult to decide what the gap was from the video though, and with cyclists look of shock as he arrived at the left wing, he did not expect it.
OP started moving as the blue car arrived at the right wing, and either the cyclist thought he had eye contact, or, looking at the oncoming cars thought the gap was not large enough ?
if the oncoming car was close he maybe decided heading for the bonnet rather than being pushed into oncoming cars was lesser of evils.
Yes it makes it look really close, but I can't be sure how far the cyclist was. The car doesn't seem to move much to make the connection though.
Even still, if I cycled on the pavement I'd stop or slow down as I crossed a road, especially as there's a car in it! I'd do the same if I was running, and look both ways. I cant see the kerb so it looks like the pavement is level with the road OP was on.