The Pitot and static are on the same mast under the wing, it has two heating elements which are prone to failure if left on, on the ground. You can tell from the ammeter if one or both are working. Rapidly changing pressure instruments immediately raises the question of a blockage, transient or otherwise. Stick to basics, Attitude + power = performance, leave the throttle alone, maintain a level attitude with wings level using the gyro instruments. Chasing what were probably spurious indications may have resulted in the situation you describe. It is interesting that we practice limited panel simulating the failure of gyro instruments but not the failure of pressure instruments. Food for thought.