Okay. Also, remember the cover bonus to the reflex save (+2), though it still wouldn't have been enough.
Drac will step as before and full attack at +2 PA (because of the forgotten cover): tail slap, wing, wing, bite, claw, claw. Although the claws have reach 10ft, the chart in the DMG on page 8 gives huge creatures two diagonal squares for reach 10ft. I guess it was better to give them the advantage than to shortchange them.