Glad you sorted it out!
Just curious why people would do that and it's not something penalized? And what kind of classes are those? In dressage ring you show just by yourself (so it's not an issue), but I never had this problem in warm-up arena (people are polite and try to keep distance).
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."