How so? This doesn’t fit any actual definition of a miracle, since it is a completely probable, even predictable event, that is easily explained without any resort to the supernatural.
Sure, it could be divine intervention, theoretically, but since it is indistinguishable from a non-miraculous event, it is pointless to call it a miracle. At that point, you can just call getting a second Snickers bar out of the vending machine a “miracle”.
What's apparently miraculous is the "priest's" mysterious arrival and disappearance, and his actions at the scene.
Don’t conflate possibility with probability. Also, don’t ignore what the firemen said about hearing “someone” say, etc. and no one saw him arrive or depart.
Obviously, I am not saying this is a miracle, and the witnesses description is entirely consistent with a miracle.
Like I said...