I have been thinking: Dangerous, sometime it comes up with results.
The fact that it bounced and returned to the Comet suggests that there is a little gravity.
My suggestion would be to use the last energy reserves, either the harpoon or the drill, to push it back into space. Hoping that the weak gravity might bring it back to land in a different place. Possibly to a position that would allow the lander to recharge.
Little loss, but possibly a considerable gain