What's wrong with this picture?

One of the fans is actually running in reverse.  The grower removed the shutters from his tunnel fans to help maximize the speed of the air moving over his market age birds.  The problem is that he forgot to "lock on" the fans.  As a result, when a couple of fans shut off late at night they started to rotate in reverse.  The next morning when the controller turned the fans back on, they ran full speed in reverse.