You can choose between downloading InDesign CS6 or InDesign CC 2014. You can't download (or as you say "roll back") subversions.
That's inconvenient. 9.2.1 did not crash for my applications and plugins. I'll see if I can get CS6 working.
I was able to rollback to 9.2.1 by using Time Machine. Unfortunately it didn't fix the problem.