This is a pretty gross error if it actually happened, you would think a priest would know better.
But there is no real proof that it actually happened, perhaps the witness didn’t see what he thought he seen. Maybe it actually happened in a non-catholic church and the witness forgot where he was at. Or perhaps the question was submitted just to enflame the EWTN expert.
Its probably just as well to suspend judgement on this, until there is a report as to the actual priest and parish where this is supposed to be occurring at.