Is it possible that this 'cure' cost 30MB of space?
I used to have 150MB. I completely deleted everything on my phone (a reset) and then I did what was described and now I only have 120MB of data left.
Can you also undo what you described in the first post?
I found out that when I got the phone I used to have 150mb of data, with 122mb of data left. This is exactly what I got when I did the factory reset.
I believe to undo 'forcing apps to install to the sd card without root' is to do a factory reset again. (Or the easy way: set "pm setInstallLocation 0")
Another question: will you need an app like "move app 2 sd" or will this installation do that for you?