I certainly don't expect the Blazers to move. It would be massively stupid for a league that has any thought of a future expansion franchise in Seattle to give up its only toehold in the Northwest. That said, if it were to happen, I would certainly not pay the NBA one cent for streaming or other coverage. I'd probably tune in to watch the "Whatevers" on national broadcasts as long as there are guys on the roster who played for the Blazers. Once that was through, I'd be finished as an NBA fan.
No joke. Superbox will allow you to catch every game, live. I'm not sure if they'll be on the DVR but the live games will almost certainly work.