> I read "the Syran regime already has these vulnerabilities that could get exploited"
By the US (interested in removing Assad because of military supremacy), Saudis and Turkey ("our best allies," Sunnis to overcome "wrong believing" Assad). As planned since 2006.
The "rebellion" was mostly a Sunni extremist (as in, radicalized by the Saudi paid preachers) rebellion in the Sunni majority places, supported by the players above. Turkey was also strongly radicalized in the last few decades, also a lot of oil money. The US had also the "democracy" babble like that in Libya (supporting Al-Qaeda!) or Egypt ("but Muslim Brotherhood are our guys", we "really don't understand" why they turned Islamic, we don't read what they write, they told us it's democracy what they want). And the Iraq war was also to "bring democracy." It's hard to close the eyes so much.
If I understand, you have no sources for your initial claim:
> Assad did voluntarily release some Jihadists in order to exarcerbate the sectarian aspect of the conflict
That goal would be more than counterproductive. The "rebels" are almost in Damascus, threatening him. That he did some prisoner exchange or tried to appease the protest, I can imagine.