Knowingnothing
Legendary!
I believe it means if you do get another Early Offer from another University, and put that on top of the UWS Early Offer, then you will not get into UWS on the Early Offer rounds.
And if you don't get accepted in the Early Rounds for that other Uni (for some reason), and if you change your preference back to UWS before the Main Round lockout date (7th January), you will be selected as first choice for UWS.
And if you don't get accepted in the Early Rounds for that other Uni (for some reason), and if you change your preference back to UWS before the Main Round lockout date (7th January), you will be selected as first choice for UWS.