Simple problem, and I fear there is no solution outside of not purchasing GFWL titles, and or XBOX products in the future.
Problem: My family watches Netflix, or plays a game requireing a connection to XBOX Live Gold. Someone uses the household PC to play a GFWL title like Batman Arkham City, and it signs out the XBOX due to multiple logins. They then reconnect, which kicks me out of my game of connection to GFWL. Add to this that progress is not saved.