Nevertheless, from the statement:
Whilst the repair was relatively simple, unfortunately due to circumstances beyond VTST’s control, the technicians from Marshall Aerospace, XH558’s Engineering Authority, who are required to inspect and certify the repair, are not available until Monday.
the public perception, incorrect though it might be, will be that MA weren't prepared to send people to Brize in time to allow the aircraft to fly this weekend.
The Vulcan is unique and working to get it flying in front of the public is NOT just another job, so I'm sure that MA will have tried to get the task completed in time.........