I'm sorry your budgies had a night fright.
From your description your Deacon has likely broken one of the blood feathers on the wing. Were there any fallen flight feathers or even tail feathers at the cage's bottom?
It's not unusual for budgies to lose one or more of their longest feathers on the wing and tail areas when having a night fright.
It would be good if you could try to better examine the longest feathers on the wing area, especially the one that has blood on it to check for damage.
If the feather is broken and you don't feel confident in taking care of it (by carefully pulling it out), then it's best to book Deacon an appointment with the avian vet specialist.
Even for more shy pet birds, in a moment of need they know they can rely on us and surely Deacon is very grateful for the extra TLC you have given him and Rayna right after the stressful event.
It's also possible for a pet bird to gain more trust in us when we help them overcome a more challenging time (be it an accident where they got hurt and needed nursing, an illness, etc).