There are some clues here:
April 3, 2014
“...There is no imminent plan to remove Wahhabism or to initiate a Saudi Arabian Spring. The best anticipated outcome for Saudi would be to quietly and effectively get rid of the zealous mullahs, change the school texts and quietly but diligently re-write history. The worst outcome would be for Wahhabism to win over the Saud family and turn Saudi into the number one Al Qaeda location for recruitment from all over the Arabic countries to fight their jihad against the United States...”
~~~
(But since ISIS has openly threatened to destroy the black rock in Mecca, the enmity between the House of Saud and the salafists is out in the open.)
Saudi Arabia places 30,000 soldiers on its border in the wake of ISIS threat