If so, he's playing a dangerous game. If I recall correctly, two prominent 30-something members of the al-Saud clan who were suspected to be al Qaeda sympathizers died under mysterious circumstances after 9/11. The speculation is that the Saudis had them killed for helping bin Laden.
This interview with the Prince also raised my suspicions.
http://www.nasdaq.com/aspx/stock-market-news-story.aspx?storyid=201103111609dowjonesdjonline000593&title=saudi-prince-alwaleed-day-of-rage-was-tempest-in-a-teacup
Especially the "We love the king" part.
I agree, if true, he's playing a dangerous game. But he does have more cover than other prominent royals do. Twenty billion dollars worth.