The springs are pushing the pin stacks into the bottom of the keyway. This space is usually filled by the spine of the key, and it's common for the plug to lock up at the 180 position like this when picking. All you need to do is push the pins back into the bible with a pick and it'll be free to turn again. You can apply tension and push them all up simultaeneously or give them a quick rake, whichever you prefer.
Also, welcome to the forums!
