Supernatural?

My Dad is the principal of an Elementary School on the southside of San Antonio (the very hispanic/Catholic part of the city for those of you not from San Antonio. He posted the following on our family website:

This is an actual photo of a window at my school that was so clean a pigeon thought he could take a short cut. Our head custodian thought is was a sign from God that we are blessed.

Several weeks later he posted the following:

I finally broke my head custodian down and had here clean the "angel window". She told me that the angel had come to protect us and that now some very bad things would happen. The next day the water main in front of the school broke. We had water everywhere, except in the school where it was turned off for four hours. Backhoes and a water geyser created a big hole which can't be fixed until it dries out. Maria looked at the hole then at me and just shook her head. Thursday we had a big storm come through I was in the office with Maria when our NOAA radio went off, we were then told we were under a severe thunderstorm alert. Maria just looked at me and went tsk, tsk, tsk. There is no way that I can convince her that this isn't all my fault. I think she went out and lit some candles