I asked a dear friend and mentor if John was on the level, he reponded sincerely,"he(John) thinks he is, but don't drink too deep from his well". Well I took a big drink to find out what he meant. I was surprised and somewhat taken back by how much he has changed, but I think there is some wisdom to be gleaned from his ministry. With that being said, I do agree with my friend, dont drink too deep from his well. Go here
http://johnharmstrong.typepad.com/john_h_armstrong_/biblical_theology/index.html to see some of his takes on biblical theology. His minstry website is Act3 can be found here
http://www.act3online.com/ . He has a lot of articles that are tellin of what he belives. in my opinion, I would put him in the same camp as those that are sympathetic to NPP, FV and RCC. BEWARE!