Look at your calendar and you may understand why nobody answered in last 24h.I would add the fact that the game probably not duplicated by himself right befote the game and problem could have been anticipated. Although I may be wrong on this point.Double scrimmage, usually againt two different teams, is known, but difficult to resolve. Some advice to profit of this extra game to make extra free training.
It's a known bug that happens on occasion. Usually we can remove the extra game but I didn't read the report in time and I had a day off that day (I'm human too:) )