It sounds like . . .
the whole Fatima hoax will be strengthened . . . thereby strengthening the the whole goddess element of the caricatured pseudo-Mary personage that was embellished so extensively at Fatima during a very standard dramatic version of a certain type of UFO manifestation.
Of course, folks focusing on the caricatured Mary and all the fantasies, dogma, mythology surrounding the pseudo-Mary personage are easy prey for such hoaxes—particularly with all the UFO technologies and their sound, light, mass hypnosis etc. techniques.
The “dancing sun” aspect was clearly a common larger [medium in some respects] UFO craft blotting out the sun and performing other typical maneuvers in the incident.
Clearly? Well, sure, except that 70,000 people saw it and (a) didn't describe seeing a "craft" of any kind; and (b) didn't describe anything "blotting out the sun"; and (c) saw the sun, not a "craft" piloted by "critters," appear to move around the sky.
So, yeah, if you just ignore all of the eyewitness accounts, it was clearly a UFO. Or maybe it was Obama, visiting from the future, in Air Force One.