I recently was playing RBI when a glitch occured similar to the grand slam out. My brother had the bases loaded with California. Wilfong hit a deep fly ball that hit off the wall. As soon as the ball hit the ground from off the wall Wilfong was called out. The runners were all going because it was obvious that either the ball was going to barely go over the wall or at worst hit the top of it. I quickly grabbed the ball and threw it in to second where the runner going to third was called out. So I figured that the game had registered the out as a catch but to my surprise the man who was going home from third who clearly left the base before the ball landed was called safe at home.
Wow, this is all very strange... You certain you got an out for lack of tagging up at 2nd yet didn't get one at 3rd?
yeah, the run scored before I had the chance to throw it to third. But since he tagged before the ball was caught I thought he would just sit at home and and not be able to move back. Every glitch I have come upon while playing RBI I have seen on this site. Which made it so weird when it happened. Although it is similar to one you have listed, the runner being able to score caught me by total surprise.