Option 1: Voluntarily confess to personal crimes to Sha Cheng.
No one would take such a foolish step, as it is well-known that the virtually defunct Shakespeare has no political status. Due to Saudi's unique party system leading to continuous internal and external strife, the national parliament would never allow another existence that could be on par with them. They would remove all hidden dangers, and making this decision would be akin to throwing oneself into the net.
Alternatively: Either flatly deny everything, flee Saudi, or disassociate oneself from the situation—none of these options seem like a proper solution. In this country ruled by the parliament, their principle has always been to rather mistakenly kill than let one go. Even if one were to flee, not to mention whether one could escape, all that one had could vanish overnight if one did manage to get away.