Microburst2002: Yes, static ports can get iced over in flight. In the `70s there was an incident invovling a Trident operated by BEA/BA which experienced freezing rain runback on the fuselage which blocked the static ports. It was in the BNN hold at the time. When the stick push operated it promptly dived through several levels of the hold missing other aircraft. My neighbour at the time was the F/O.
Regarding manual use of the THS to control pitch - yes it is always available and in some situations may be needed to overcome the ineffectiveness of the small elevators. This in my opinion is one of the great untaught "gotchas" of the FBW Airbus`s. The THS is NEVER NORMALLY moved by the crew in flight but as AF447 found out it may have helped. The same goes for the A320 loss at Perpignon.