The only herm I had kept producing seed pods which spread from bottom to top of plant. Unless you found the pollen sacks late in flower, I'd be hesitant to risk your sensi. Now if for only a short time, maybe, but I'd be looking over every bud site every day and pulling those off. Maybe consider not running your fans or at least position the plant so that the pollen if dispersed might travel away from your other plants. Pollen and water don't get along, so you might be able to use that sparingly to neutralize perceived threats. I am not aware of a herm "going away", mine got worse.