Can you use the Abort Switch option after seeing the other players' cards for that register?
It's not 100% clear, but I'd say yes, you can see the other players' cards.

The rules explicitly say that everyone reveals their cards at the same time, so if you reveal a card, everyone else's are visible too. (I'd probably try to avoid spending much time looking around at everyone else's moves and figuring out conveyor belts and so on, though!)