One though comes to mind, though; from their actions, it appears that Nasrallah& Friends are looking for a surrender, not a victory, as they cannot afford the consequences. This is also apparent from early rumours that Joumblat had left Clemenceau; apparently, the story was meant as a way to pressure him to do the right thing.
If that is verified by the events of today, then Joumblat's staying in Clemenceau fits in this logic; unable to deny them victory, he appears determined to deny them his surrender. Joumblat is well aware that security and safery, in a Lebanon dominated by Hezb, can only be political, not military.
His presence in Clemenceau therefore contributes to freeze Hezb's advance, and to shore up Hariri's in Koraitem. No wonder Hezb just added pressure on Koreitem; they may be hoping to unhinge what they perceive to be the other weakest link in the chain.