The interim report says the go around was most probably initiated because of w/s. So one would expect it was up on the tv. AP and AT off FD on, aggressive max power is what Boeing says and that`s what the N1`s show. In manual flight pressing TOGA switches activates the WEM, A/T will not move the throttles so crew firewalls them. I would assume this to have been the state of affairs until reaching 900 meters when the nose was commanded to pitch down. Why, to stop the climb, there can be no other reason. So why stop the climb, possible reason is weather, worse anticipated at higher altitude. The actual weather at the time of accident says CB`s base at 1080 meters. Looks to me they may have been attempting to avoid entering an active CB cell.