"It seems that the Syrians decision to dub it an “ammo drop” rather than an air strike is an indication that the Syrians are intent on deescalating and downplaying whatever actually happened last night. The Israelis, by refusing to confirm or comment on the incident, are playing along, and thus also helping to defuse what could have been a prickly situation."
A plausible analysis. Many times before, both Syria and Israel have rushed to downplay growing tension. Look at last year's attack on the Lebanese-Syrian border post. Both Syria and Israel were extremely keen to announce that no bomb landed on the Syrian side of the border.
Conflict Blotter also says Israeli jets train in Turkish airspace. This incident was right on the Turkish border. Could Israeli jets have strayed into Syria on their way to Turkey?