If science can explain it, it'll probably explain your experience in terms of "brains are quirky bastards".
Thing is, memories are not set in stone and they're most certainly not objective.
Every time you remember something, your brain reconstructs a believable sequence of events based on a few data points and, importantly, on what you believe had happened.
That's the mechanism that makes hypnotic "retreival" of "repressed memories" basically worthless as evidence. (It is also one of the key mechanisms that make regression to a cause such a powerful therapeutic tool.)
Your brain records a few emotions, a few visual features, a few sounds, a few smells and then reconstructs all of that into what it believes had happened; it doesn't record all the data and play it back like a DVD.
This is why we have a lot of stories about hauntings and a frustrating lack of good camera footage.
Cameras don't have the same data storage and retrieval mechanisms that we do - such as a fluid, unreliable memory that shifts to fit your current beliefs.
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Of course, science is no arbiter of truth - it is merely a set of methods and prior beliefs that helps people work with facts in an objective manner.
So there's no reason to cite scientific claims as grounds for moral or ideological decisions, including those on spirituality.
At best, if the data is reliable and sufficiently plentiful, science can say what is or is not, but no more than that.
Moral judgments are about what ought to be and ideological ones are about the things we prefer to believe.
Science has nothing in common with moral or ideological decision-making. To pretend otherwise is to invite the creation of utterly abominable things, such as the radical science movement.