I had a screw-in compact fluorescent do something similar, a capacitor blew itself up and cracked the housing wide open. I replaced the capacitor, two years later the ballast is still running an F15T8 over a 10-gallon quarantine tank. Waste not, want not.
I lost a tank full of fish that way. Thank goodness it was a small tank with very few fish. My problem was getting everything clean enough that I was willing to put fish into the tank again.