The reason it froze was leaving the hose attached. The plunger pulls the water from the hose back into the body of the faucet all the way to your frost line. Using a torch may melt the plunger. You might try a hair dryer and it may take a long time. Good luck.
As for the other reply, If you had a 10 footer with the hose attached, You would most likely get the same result.