Dr. Hanley & Dr. Mainwaring came out while I was grabbing a bite to eat in the cafeteria. Dan talked to them and they explained that it was not an emergency trip back to the OR. Drew had not come back to the ICU yet, they were still watching him and said that they saw he was bleeding a little more than they like after surgery. So they reopened him, and cauterized some of the collaterals that were "oozing." He didn't have to be on bypass again. They said he has been and is still very stable. We should be able to see him soon. We've now been at the hospital for over 12 hours, and it's been ten hours since we kissed him goodbye. Thank you for your prayers and encouragement.
Update: We went in to see him briefly and will go spend some more time with him in an hour after they've got him all settled in his room. Here's a couple of pictures from when we saw him. They are a little bit scary if you haven't seen this before, but to us he looks good! And, I took a picture of his oxygen sats at 100%!