And I had to sit on the ground at North Weald, wioth a fully serviceable a.c. available, due to having a heavy cold. Rats!
Same situation for me -- was moping around airfield, but then someone said they were going to land in a farmer's field that had never been landed in before. Had to follow along in mine! I can now affirm that blocked sinuses are not a problem -- for me anyway -- up to at least 1,000ft agl.
QDM