The brush broke in half, and the top half of the brush fell into the black abyss inside my machine. I dug out my tweezers and tried to pry it out, to no avail. I busted out my vacuum and tried to vacuum it up, with no luck. Next, I took my machine to my sewing machine dealer, and spent over 30 minutes with their special teeny tiny tweezers, and still couldn't grab the brush, no matter how hard I tried. They told me I could leave the machine for the repairman, but that he would charge me $80 to open up the machine. My husband had a conniption and swore he could fix it.
And fix it, he did. It may have taken a tense 45 minutes, in which I paced and cursed myself for causing all this trouble in the first place, but my husband saved the day and pried that evil thing out of my machine.
The moral of the story? Never clean a sewing machine with a makeup brush. From now on, I will strictly use the vacuum to clean out my machine. Now on with the sewing!