Continue with the journal, recently I read thru mine, and I have some rather disturbing accounts of his behavior saved in it(I use a completely private online journal)tried keeping a paper one, and he found it one night while drunk and enjoyed laughing at what I'd written. I even found some old posts I'd made on another messageboard, talking about his drinking, and I cut/pasted them into the journal.
do you have an old cell phone around? Last night I did some "voice notes" recording of him, not many, but enough that you get the gist of his ranting.