Aerodrome or field
If the CAA has suspended the Aerodrome licence then Shoreham is no longer a Licenced Aerodrome and so is not subject to the rules governing such aerodromes, in fact it is a field and as such removing your aircraft is subject to the normal laws governing removal of personal property from another persons land.
I would not be waiting for someone to put a chain around my prop and the months of court action that would follow to recover my property if this happend.
If it looked as if this shut down was going to take a long time to sort out I would fly my aircraft out as soon as no one was looking, I dont think that the administrators would have any wish to persue me for this unless money owing.
Fortunatly I dont see the closure of Shoreham lasting very long.