Day Hiker recently pointed out that the prominence of Lee Peak should be determined by the lowest cols between Lee and Charleston; from the map, the col just N of Devil's thumb appears to be the determinant. I took two long barometric altimeter averages, at the peak and a col, and got a prominence of 308+/- 10 feet. I still want to look at the data more, but it looks like this may be a "real" peak.
I picked a point N of the Devil's Thumb trail, and may not have picked the lowest. The ridge is very serrated there, and there may be lower points.