It's a sad story in many ways. One of those sad aspects is that it is not unusual.
There is such a drive in the minds of many to leap to a miraculous explanation, and dismiss non-supernatural explanations without a thought. That in itself is worrisome, but there are some who go so far as to publicly insult people who politely suggest that there might not be an authentic miracle here.
Skeptics aren't p*ssing all over anybody's faith by suggesting that they exercise a little criticism. Indeed, it can be argued that Jesus Christ himself urged critical examination of supposed miracle-workers and signs. "Be not deceived," Jesus urged (Luke 21:8), teaching that many of these wonders would be false or mere natural occurrences.
In the case of this house, there are many hints that the occurrences are of human invention. One that was immediately apparent to me is that the narrow streams of oil on the wall originated from a large spot of oil at the top of the narrow stream. This is indicative not of a wall oozing oil, but of a person throwing drops of oil onto a wall, thereby creating a large spot from which the oil drips down in a narrow stream.
This is, of course, just a guess on my part, but I can easily create an experiment to determine what sort of pattern would be created if an individual were to fling oil against a wall.