You can do a CAT 2 , but on an Autoland. Without A/THR you have to turn the AP OFF at minimums or higher and land manually.
Mmh, You've got me doubting there. I've checked my company's FCOM 3 and 4 + qrh. I can't find a reason why I couldn't autoland cat II without the A/THR.
Simply use the thrust levers to keep the speed, let the A/P take care of flare + roll-out and retard the levers when you hear "retard"!
I think Slasher's statement that you can do (EO) Cat II autolands with manual thrust was correct!