Archer can be a decent bloke but he loses it too easily. Even if you disagree with him, he gets wound up; he doesn't just log off or have a reasoned debate. 
He has been goaded but he then gives people what they want. One memeber who has goaded him, though, has been threatened several times by Archer; wanting to 'meet up'. 
One is a bit naughty but the reaction is out of order and illegal, probably. 
You can't justify what Archer has done, although I have no problem with him. He has got a problem with anger and maybe needs help with it before using the forum.
So, I don't mind if he comes back (with conditions) or the ban stays. 
I don't suppose he's that bothered, either.  
Matt, that is disgraceful and reaffirms, 
again  
, that we need more mods.