I am guessing that the driver of the motorhome panicked when the tyre blow out, to end up on its side
Because I used to do high motorway miles when I was working I have had several blow outs on motorways over the years, and have always managed to stay calm and make it to the hard shoulder, other motorists have also been good at spotting that I have been needing to make it to the hard shoulder and have slowed down to allow me to get across