I will attempt to go back on the topic. While I will not speak for anyone, my belief for those who use mathematics, find obvious visual flaws in pay tables and seeking machines that have left optimal play from a previous player, are using parameters acknowledged for AP play.

I cannot speak for the case in question but it appears that a code was utilized to give out money above the recognized pay table. From all the comments I have read, this is the best I can ascertain at this point.