Slush On The Runway Margins
From the X video all looks well until shortly after mainwheel touch down. He starts out fairly well right of centreline but then yaws quickly to the right as if the right main gear has gone into slush on the runway margin. Holding full reverse as he crosses the grass is guaranteed to trash the underbelly. With all that soft grass left ahead, stopping was not an issue. I imagine the main gear struts have seen some significant side-forces beyond design limits.
In what world is it safe to continue taxy to the terminal?