A similar issue has happened to me but not as dramatic.
From a side street, took a 90 deg right turn accelerating onto a busy feeder road, something kicked in and caused my brakes to pulsate. I do remember a light blinking rapidly, but I don't remember which one nor do I remember which brakes activated.
It was over a year ago, and I cant remember too many of the details. I pulled into a restaurant parking lot, turned off the car and turned it back on again and had no issues. I have not encountered the problem again.
'11 GT Premium, Roush Axelback, JLT CAI, BAMA tuned