How does this robot have addressable LEDs still running when disabled?

[NathanCJohnson]

I've been watching the webcast of the FIM Woodhaven district event and I saw team 1076's robot has addressable RGB LEDs that keep running after the match was over.

https://www.youtube.com/watch?v=XWKr9B_NIjw&t=2m38s

It's pretty cool, a line starts moving through the LED strip when the robot is disabled but I don't understand how it works. I didn't think that when disabled the controller would be able to continually send signals to the LEDs. Anyone have any ideas on how this works?