It looks like there would have been time to stop/slow down. I possibly would have turned to the left to pass behind him/her.

It's all theoretical though. They stopped. Would have been better had they seen the cyclist before starting the turn, but people F-Up which is why we can't assume they're always going to do what they're supposed to do.

I had a driver blow through an intersection in front of me this morning after a rolling stop. (I had no stop my way). She never even turned to look. I was able to slow down enough to avoid a collision because I approached cautiously after I saw her. She looked like trouble.