OK let me try my first take with real substance......
I thought Israel had bombed the roads out east. They had done this to prevent the terrorists from fleeing and Syria from resupplying. So how and why are buses able to leave.
What bus number to you think the Hezzie leader is on?
I suspect he's on a special...unnumbered, unlettered, and travelling by night!
One needs to look at a map. There's a lot of mountains and various ways to get in and out.Israel concentrated on the south of Lebanon. Roads to the north might still be usable.
From what I know from people stuck in Lebanon, most of the major roads were hit, with the exception of one road through the north of Lebanon (there are now conflicting reports about whether or not that has been hit in the last 24 hours or so) but there are some very rough (and not great to use under good circumstance) and roundabout type "roads" (having been on some of the decent roads there, I'm not sure they really are what any of us would really call a real road...but...anyway...) that you can use to get through.
It was this northern road that many were using to get out, and where it sounds like many buses were corssing. I also have heard from friends that some roads are being semi-repaired in areas, so that may be playing in, also.
There are still some other places they can go around on rough areas to get around destroyed roads and then get back towards the other border poitns.