It's as simple as this, YTTV had a contract with Disney that lapsed. When YTTV has no contract they are required to take down the channels unless Disney allows them to keep them up during negotiations. I don't see that Disney allowed that so Disney, being in the drivers seat, is responsible...
They are going to cover almost the entire nation on the spot beams on the new 110 satellite. There will be no eastern and western arc any longer. All services will be covered at 110 and 119.