A water pick will clean out the inside, but a small coffee straw, and a jet of water from the faucet is just as well.
As for the bead release, soaking alone will just not do. Treat it like any other beads. Dremel With diamond tip, pipe cleaners (the real ones), taking the mandrel and water and running it against the side until the release comes out. There are brushes that are specifically sold to brush out the release, but in your toothbrush isle they have these cool little packs of brushes that work really well, and cheep.
sort of like this
There are other things people have tried as well i am sure, but this will get you started.