At the end of my post I mentioned having "more stories" about the house. One of them was very similar to what you described.
This time though it involved both of my brothers and a visitor we had sleeping over. We were all up late, since it was a Friday night. We were just talking when all of a sudden a red dot appeared on the floor. I was sure it was a reflection of some kind from one of the windows so I got off the bed and went to the first window. I flailed my arms and moved aroung the window but the red dot was not affected. I asked my brother, who was sitting next to the other window, to do the same. The red dot then began to, how do I say this, expand and retract. At the same time this was happening the room became extremely cold (and by the way, it was September in Oklahoma at this time, about 70 at one a.m.). The red "dot" became a glowing red pit and air rushed from the room to the "pit" and as soon as that happened it was gone. We all sat there in amazement. No one spoke of the incident outside of our circle for a very long time.
There are a few more, but I'll save them for later.