Unloading the Standard Manufacturing DP-12

I recently watched the video on the Standard Manufacturing DP-12. I really like that shotgun and I think it would be fantastic for home protection. I have a question about it.

In the video, Hickok demonstrates how, after shooting one of the two rounds, the gun will not pump until the second round is fired. My question is, what if you wanted to unload the gun at this point? Is there a way to eject the single load and then jack them all out, or do you have to take another round first? Thanks in advance