Does Western Michigan usually fly Central’s flag upside down, is this a mistake, trolling, etc?

Central Michigan really half-assed their approach to being on ESPN3, too. This is straight out of the 1980s

2011 September 10 12 43 50

2011-February-5-18-31-7

2010 December 11 14 29 15

2010 November 5 21 3 20