The word "aweful" is a combination of "awesome" and "awful." It is typically used to describe something that is so bad or terrible that it becomes impressive or remarkable in a negative way.
He looked aweful in our last two games but i cant recall him getting any great service either — Hopefully he will rise to the occasion. (justarsenal.com)
He was aweful in today's match and Colombia is out of Copa America. (justarsenal.com)