I mounted the drive as an external on another computer.
Well, this is the same as bypass CTM drivers.
The disk will be back to baseline snapshot (i.e., the time you've installed the machine).
You've misunderstood now CTM working
When CTM uninstalled and messed the hard drive it also reset the data back to the day CTM was first installed.
That's the baseline... You've uninstalled to baseline, CTM did that apparently. But it should have a choice from you and not automatically. What did happen? What did you do?