I disagree with you on this one.I think the best way to prevent this is to not do the Mighty X. It's too repetitive.
Find the shots that you have the most problem with. Practice those but don't practice a single fixed shot. Have a little variation on each one, whether it's distance, angle, cue ball position.
I think the mighty x is a great drill for beginners, who are working on their stroke, or in my case, I like to end a practice session with the mighty x if I do position drills for small areas. I tend to start slow rolling shots or lose my follow through a bit while trying to finesse one or the other shot.
A few stop, draw and follow shots, help me to find my stroke again.