You definitely do not want to be in the Evards when Senara's turn comes again. The damage won't be so bad, but Sharm could end up Immobilized in the middle of a damaging zone.
You should definitely be standing up, and then either shifting out of the zone, or charging away from it (which will provoke).
Brudd goes after you, with only a few Legion Devils (who aren't near you at all) in between, so if you need healing, he'll be able to take of it. Second Wind, for non dwarves, is generally inferior to other healing powers. It's what you use when Healing Words and other powers run low (or if its the only worthwhile standard action you can take), not before those powers have been touched at all.