G sat in his bubble and considered his next move.
Cas-TL and Samsquatch had put their heads together and come up with several modifications to the force bubble entrapping G. While still preventing him from using his powers, the bubble had been reduced to a small glowing gold ring around G's left ankle. This would allow G the freedom to walk around. The ship's internal sensors were tuned to the ankle ring, beeping if G wandered into any sensitive areas and sounding an alarm if G left the ship. Since G had annoyed quite a few beings during his long life he wasn't going to take his chances out on his own without his powers.
G's first taste of freedom lasted less than one standard hour. He had gotten bored and cranky during his captivity and had used his new mobility to sabotage the ships audio system as Dean's music had started to get on his nerves.
Dean promptly restored the bubble to its previous shape around G and dumped it into the sewage reclamation tank.
Dean then played his music at full-blast for 36 hours straight. He finally relented not out of mercy but because Sam and Cas threatened to mutiny.