My husband and I are almost done remodeling our entire house-kitchen, deck, fence, floors, ect. We have a multi-level so we've been refinishing the floors in our house one level at a time. On our last level to refinish (bedroom level) we were very careful to correctly sand. The problem was my husband wasn't aware of not touching the bare sanded floor with any bare skin and he attempted to sand trim before we stained. When we stained (on hands and knees) we saw the spots by the bedroom doors. We thought that we could live with them and polyurethaned our floor. Now painting the trim the spots are driving us up a wall and my husband wants to redo the floor. Complicating matters is that I'm 24 weeks pregnant and we are trying to get our house done before the baby comes. Furthermore my husband is a surgical resident and works 80hrs a week. He wants to try to tape off a strip of about 6 boards from wall to wall and resand only those boards which include the spots and then try to hide the unmatched polyurethane lines inbetween the floor board cracks. If that doesn't work our plan is to redo the entire floor. I just want to know if it is even possible to try to repair a section of polyurethane or if we should just resand the entire floor without wasting our time. Thanks for your time and consideration of this question.