There are more images in which there seems to be an aperture protruding, with an changing position of the aperture, and a changing position of the Sun.
Judging from one of the movies the problems started at 2013-10-24 at 13:00:00 UT. This coincidently after I had looked at the Sun through my solar projection setup. Did I break SDO? :-)
Let's hope it's only a temporary glitch with that spacecraft, and they will be able to resume normal operation.
[Update 2013-11-14] Seems like this is normal and part of a calibration process.
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