Crashing once an hour is not 'okay' by any stretch of the word.
Come on. That is an unproductive post.
I too have removed Adash and will continue to remove quest mods as I finish them. I have had no correlation between removing that and crashing, allthough I never did start it this time. I have no definite answers to give in this regard, sorry.
Scripts can get saved with your save game.
If the un-installation info in the readme does not state anything differently I hope most quest mods can be removed without problem.
Some, like Blade song, you have to first run an script from in-game before un-installing.
Clean saves inside the testing hall might help before removing quest mods.
Checking for insane bloat after removing mods.
Eh, just some ideas from top of my head (or back of it....)
Cheers!