Yes but it is not easy.
One person posted on another forum he was able to split the glass from the bucket using an electric hot blade tip on a variable temp Soldering Iron. He cautioned working slowly.
The other alternative is see Lou or a GM contact for the C6r Headlght bucket source. I have heard they fit C6 Z06s and the glass and the bucket are separate. They also have different headlight so this alternative might prove problematic.
:cheers: