Is the STL is Exploiting Syria’s Weakness ?

Qifa Nabki:

Given that most people in Lebanon already believe that the STL is politicized to some degree or another, the alleged re-emergence of a Syrian track in the investigation at a time like this — when the regime is battling internal protests and challenges to its authority — seems a little too convenient for me.

I have great respect for Elias, but why is it so inconceivable that a weak, isolated regime can spin out defectors faster than it can kill unarmed protestors? Why does it have to be an international conspiracy concocted behind closed doors?