Really sucks because I could get stuff for my MINI there in the same order at the same discount! Great way to get part numbers too. Toyota probably didn't like them doing it because the other dealers would be POd at the lost gouging opportunity.
Toyota likely had nothing to do with it. Sewell probably decided that they didn't want to deal in the online game anymore.
There are plenty of other dealerships that sell online at a discount (Sparks Toyota, Carson Toyota, etc) so it's not pressure from Toyota.