Yeah, been there done that about 9 months ago, and on an SP node, I think at
AIX 4.3.2.
Nothing sneaky;
Just as you are doing, we reloaded the image from a mksysb tape, then
restored each filesystem from TSM to get current.

If you've got multiple tape drives, open another window and start the
restore of /home in parallel with /var -- and you can go /home faster!