Yes Trent. If threatened with serious enough punishment, like flogging, I'm sure he would admit to lying, though.
We know that some, in support of their cause, are very resilient and are prepared to suffer or die: even so, had they been mistaken, or had been lied to, they might still have genuinely believed in what they viewed as being the truth - but that conviction isn't evidence that what they believed, and however sincerely or doggedly they believed it, was indeed true.
This is about were the disciples mistaken. How about mistaken British intelligence on WMD? That was refuted because they couldn't find it.
Being mistaken about ordnance and being mistaken about apparent miracles aren't quite the same thing though.
Sure, people believed it to begin with, but not when it had been investigated. I think it is safe to assume that the gospels would have been scrutinized by early readers and witnesses questioned, to find out if, as all four record, loads people were healed by Jesus.
So, what methods did these 'early readers and witnesses' use to scrutinise so as to rule out the risks of mistake or lies, and just how robust and independent of bias were these methods?