James Corden falls down the stairs in "disaster" Grammys opening

James Corden was the first to admit that everything turned to custard as soon as the Grammys started.
 
The awards show was meant to begin with James Corden walking down the stairs as soon as he was introduced, but after the elevator lifting him to the top of the staircase got "stuck", the well-rehearsed dance became a serious mess.
 
And things only got worse as James tried to make his way down the stairs...
 
Watch how James Corden's opening stunts happened in the video above.