[justa-hairyape]

Looks like they are using more then Scuds.

Syria Fires Scud Missiles, Burning Bombs and Even Sea Mines at Rebels

[buwaya]

It does sound like desperation.
Un-aimed use of all the ammo thats left.
I suspect that some of the Syrian regime bases are hard to resupply by now and are running low on effective munitions.
They can choose to blow up the remaining stocks or shoot them off.
They may retreat and consolidate soon.