There are 5 really good air bases in Northern Saudi Arabia. Any of them would provide Israel with an excellent staging base for an Iranian attack. If the Saudi's want to destroy the Iranian nuclear threat, all they have to do is give Israel a week or two access to one of these bases, and a lot of jet fuel.
This was my thought as well. This incident could well cause Israel and Saudi Arabia to join hands, covertly of course. Israel would attack Iran and the Saudi’s would conveniently deny any knowledge while actually be providing Israel lots help with air bases, logistics, fuel, intelligence, etc.
“give Israel access” — that is political suicide for the Saudis. If they did this, they would be thrown out of their own country by their subjects.