I'm thinking the Watchtower fears them and the bad publicity they generate. With all the lawsuits pending over childmolestation issue and the $28,000,000 Conti case outcome in the balance and close to a conclusion, the GB would like to hide from public view, and so the move to a more secluded spot with tighter security.
I'm thinking that perhaps many will take oportunity to give them a good send off before they leave especially if they loose the Conti case.