I used the tinfoil to lift them out of the pan, then peeled the foil off. I used a sharp knife (liberally dusted with cornstarch & confectioner's sugar) to cut them up. It was quite messy!
I put them in a bag with more of the cornstarch/sugar, and shook it up, to try to seal the sticky edges. Finally, I piled them into a pan:
But really, the most important thing was USING them, right? Fortunately I was headed to my local grocery store, where I pondered the many fancy drinking chocolates/hot chocolates/powdered chocolates/shaved chocolates...it was rather dizzying. I wound up buying something I've been curious about for quite a while: Ibarra Mexican table chocolate. It was about half the price of all the other options (it cost $3.89, I think) and had a LOT more servings in the package: 24, or two wedges per serving.