um the suv was following too close....
By the law, you'll be right, because it's a rear-end collision.
Yet I place the blame squarely on the squid. And here's why.
He should have known that there was a SUV behind him. That's what mirrors are for.
Ignoring, or unaware of the SUV, he went into a blind corner and went out of view of the SUV.
He then executed a stoppie, which means that his speed rapidly dropped.
And you don't know what the SUV driver was thinking. My guess is that the driver saw all the bikes parked on the outside shoulder of the curve and was watching them to make sure that none of them were about to pull out in front of him.
He wasn't watching for the bike in front of him, because he didn't anticipate somebody pulling a stupid move like that in the middle of a blind curve. And coming around the corner and seeing the bike with its ass in the air probably shocked him enough to increase his reaction time.
I blame the squid for this one.