I presume if they were loaned some airworthy engines and had appropriate checks done, they could be flown out gear and flaps down?
The engines are LY are time expired (some last used on a 767 based on the intake strakes). I think WV didn't have engines changed, but whether they 4 could still be considered airworthy or not I don't know.

There are/were also plans for a large hanger to house the aircraft as part of the site redevelopment however. I would hope aviation filming would want to continue using and preserving the aircraft and not be forced out of business. Afterall, they have a huge value of asset in those aircraft.

Either way, nothing seems to be happening to the airfield in the short term at least.