That presupposes that the disciples had anything to do with the Gospels. But even so; it is easier to imagine people making up a story like that than all the machinations that would make it a literal truth.
Knowing that people all the time make stuff up (just look at many religions) it is easier to assume that for me than a "just so" story that would make sense of the events as written.
There are people who believe the story of Smith and the Golden Tablets that Moroni showed him even though it is manifestly a made up story. Their faith is extremely strong. I see no reason why a similar made up story wouldn't carry weight with believers in an early sect.
I didn't say the disciples wrote the gospels.
I said some of them were still alive when the earliest Christian writers were active.
The Resurrection of Jesus is attested to by multiple independent sources, and the living disciples would have been aware of the oral and written stories circulating about the events of the crucification. Jesus' brother James, and Peter were supposedly in direct contact with Paul who was openly teaching about the resurrection.
The Resurrection either requires a coordinated conspiracy theory by multiple individuals.
Or it requires a medically rational and feasibly possible explanation that fits the details written about in the gospels, without resorting to miracles or conspiracy theories.
Absent any direct evidence of a coordinated conspiracy theory, my null hypothesis is that there is a rational physical explanation for the resurrection
That's my theory, and I admit it's just an educated guess.
Edit to add: magical Mormon glasses are a fantasy with no basis in human experience.
Mortally injured people being mistaken for dead does happen, and is part of human experience. Before modern medical technology, people would sometimes be buried with a hand bell in the coffin they could ring if they recoverd from a deep comatose state