Done any work on the car lately? Sometimes when I have disconnected wheel sensors, after reconnecting them I would get a temporary glitch like that when I started up the car. Of course, sometimes I would forget to reconnect a sensor, and then all sorts of alarms would be going off.
Did you feel any changes at the brake pedal?
Since you aren't getting any error messages on the DIC, we can only hope that maybe it's just a temporary hiccup that you will never see again.