Wow, that is scary, so the bus driver swerved in front of you into the wrong lane of the road?! Does sound like you would have a case for a lawsuit, but I have no experience with that stuff.
I don't know if you do this already, hopefully you do, but practicing your bike handling skills is a must. I have raced x-country and downhill and I still go fool around in a parking lot experimenting with max lean angles and maximum braking on pavement. A well set up V-brake on the front should be able to keep your back tire an 1" off the ground using 1 or 2 fingers with your butt behind the seat to get your weight back. 30mph is fast but you should almost be able to stop as fast as a car with practice, something like 4 or 5 parking space widths.
Your back tire should just be touching the ground if you are stopping in a straight line. If you are turning then the back brake comes into play.
Hope your back on the bike soon!
Ian
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