Looks like they got sideways early on in the incident.. very reminiscent of the Delta Mad Dog aiming for Bowery Bay at LGA a few years ago. Loss of directional control due rudder blanking...
https://www.ntsb.gov/investigations/...ts/AAR1602.pdf
Some discussion over at APC..
https://www.airlinepilotforums.com/e...way-video.html
Glad to see everyone got off OK, I'd characterize it as a 'Racing Incident' Landing (or taxying) on icy runways can be frightening...