Slipin Away,
Om my boat (same as yours) both the top and bottom rail of the Oceanair Blinds in the main cabin, seem to be held in place by metal clips at either end, and are pressed into place. The "clips" on our boat appear to be a light weight metal. It is not a "track" but small metal clips (about 1/2 inch long) at either end of the top and bottom Blind Rail. It appears that you could take the blade of a screwdriver and open the "clip" enough to remove the track.
Hope this helps, if not let me know. Mine are in need of cleaning also, let me know how you are going to go about cleaning yours, as we need to do it also.
Jeff
SV / Sooooo Lucky
Hunter 45 CC