1) The Dolans buy the remaining of VOOM. Without the satellite it shouldn't be that expensive.
2) Lets's assume a period of 3-6 months of pending FCC approval during which VOOM can continue using Rainbow-1. Without stopping the broadcast on Rainbow-1, VOOM starts broadcasting all channels on Rainbow-2 (AMC-6) and using MPGE-4 (that will even allow extra capacity for new channels).
3) After Rainbow-2 is up, VOOM starts migrating customers. A single trip from the installer will re-position the dish, change the LNB and install the MPEG-4 module into the STB.