Game designer to the rescue here :-)
For the sologame you can indeed not be captured as there is no one to free you from your cell once captured.
The only advice I can give you is: don't end your round on a potential spawning point and also make sure your room doesn't rotate towards a potential spawning point.
I hadn't thought about what constitutes a "spawning point" until now. There are only 4 minotaur spawning points: blue ring aligned with blue cell, red ring aligned with red cell, yellow ring aligned with yellow cell, and green ring aligned with green cell. It's a good idea to keep track of where these tiles are located.