I agree with TWO - keep it on an intellectual level in class and you should be fine.

The other thing I'm thinking is maybe you're trying to control your processing of the issue too much? I notice you say you set aside time to deal with this issue in particular. Maybe you just need to let it come up in its own time? You've brought it up, give your mind time to process it in the background? I think the class should give you little trouble - you're already aware that this is going to be a possible trigger, so you're not going to be blindsided.