He told the PF to stop climbing, told him not to deploy speedbrakes and during the few seconds he had control tried to get the nose down. He seems to have figured out what was happening - why he didn't communicate this is one for the BEA HF bods.
@Lyman, I'm only going on the information in front of me. Every call he made prior to the Captain's arrival was correct, and yet he seems to have felt he had to wait for the captain rather than put his foot down and take control himself. I'm no expert, but it reads a lot like lack of confidence to me.