By rights, you should all have full rights to those BTC that were mined during that period, because those avalons were YOURS, not THEIRS
file a lawsuit
Is that really true though? If you buy a custom built car- the guys building your car can drive it around can't they? It's not like you would require them to drive it on a treadmill. As long as it came to you in new condition (dusty units aside- they said they don't have a clean room) wouldn't you be happy? In my mind the units are only yours once you get possession of them.
Transfer of ownership should come with tranfer of funds.
Your hypothetical sports car's back-seat is covered with load and used condoms... 'Oh well, it wasn't mine until it was mine'