Frankly I don't believe its possible with Arianna Huffington neither.
If you ever worked with her, you will clearly see shes a female type of Kalanick; the only difference he seems to love party, sex and alcohol and couldn't care about sexual harassment at his company; meanwhile Huffington is known for backstabbing employees (co owners too) and always gossiping behind others back just for fun and treat people like crap in general. In both examples, a normal company would not be able to thrive; and also look what happened with Huffington Post under her tensure; even AOL ceo did not want to work with her at some point.
Bottom line -- removing Kalanick is like rearranging seats on Titanic.
But it's almost certainly not possible to do it with the same CEO. A leave of absence is not sufficient.