General thought: every class has its 'goods and bads' (yeah, I'm not English ); if only 'goods', that would lead to a class comparable to liches and thus very bad for game balance (and fun - you have any idea of how many people log off or even refuse to log on when they see Dullameh around ?), if only 'bads', the class would suck and no one would play it.
As I have fought against a lot of (old class) ap's, I know it is hard for them 'to get started', i.e. to get some counters on their axe or sword or whatever. But once they have that they can easily beat up most classes (given that you use ALL your abilities, use wands, quaff potions, etc. ) Trust me, I have seen ap's do things that really knocked me off of my chair. I think your main problem was that there were/are tons of paladins around: you flee from one, you find another one, you flee again, and you have to face another one because some bird is telling everyone where you are, etc ..
I have no idea about how good or bad the new unholy blessing is, but if you have to fight ap's with axes like tillian's (or whatever his name was), you're dead anyways: that was demolish and devastate through resisting and sanctuary ... I mean .. how fair is that for us ?
As for the irongrip .. if it was not 'dispelable' then we would only have the chance to sacrifice your axe when we kill you - or be lucky and catch you off guard .. given the fact that you can teleport, quaff flying and cast protective shield + use wands (which you didn't use often, if at all - I don't know the reason for that, but there are times of the day that you can easily get them with a group of 4, 5 people), where would that leave us ? .. Besides I don't think you were fumbled THAT much eh ?
The idea about untainting an unholy weapon by a paladin is kinda cool, but useless once all those paladins that are around now, delete or stop showing up. There are other ways to protect your weapons (not much .. but think about elves for instance - which can be a disadvantage as well when you walk around with drow .. :-p)

Anyways, you may be right about some points, but I do think the ap class is fairly balanced as it is now.

Gorach
P.S. my reasoning might 'rumble' a bit, but I am hungry and wrote this just before diner.