From your description said SUV caused no crash yet you took it upon your self to cause a crash.
According to the law, a driver must maintain adequate distance between himself and the vehicle before him to avoid a crash. If one can not avoid a person in front of them using their brakes, they are guilty of following too closely and failure to control their vehicle.
It works both ways. A few years back I was behind a school bus who was in an intersection making a left hand turn with a green light and for whatever reason she slammed on the brakes right in the middle of the turn.
I wasn't too close, but I still knew I had to brake hard and moved to the side of the road to prevent getting run over from behind. I applied the brakes and locked the front wheel in the silt left over from winter road sanding. I tried to regain control of the bike to no avail. I fell off and the bike proceeded under the bus full of excited children.
Though the skid was clear in the silt and the witnesses all agreed she had no reason to come to a halt like that, I got cited.
I talked to a lawyer and he said under normal circumstances he could get it reduced to some lower, non-moving citation to prevent points to my license, but he said when it comes to school buses, there won't be any leniency from the courts.