Tumbler problem - key broke; turns freely

[Secondaries]

Hooray! So my steering lock wouldn't unlock. Long story short, I messed with it too much and the key broke off in the ignition. Right as it broke, though, the tumbler turned freely, as if it no longer engaged the actual switch. Normally I assume this wouldn't allow the tumbler to be removed since you can't turn the tumbler to the required position. I can, though, and I got a safety pin into the tumbler release hole. But I can't get the black steel collar to unscrew.

Is there something I am missing? Lock is still engaged. Does the lock prevent this black collar from unscrewing? Help is needed, must fix before I get off at 7pm!