BOAC: as an addition to Chris`s excellent posting - what many people on here who have not been "Airbussed" may not realise is this .......... with the ATHR engaged, when the Thrust Levers are retarded in the flare manoeuvre, the thrust delivered is not actually reduced until the Thrust Lever Angle passes the point which coincides with the actual thrust being delivered. Only after that is the thrust actually reducing. Typically this occurs after about 50% lever travel. Not the same situation at all to a more conventional driven lever system. The Airbus guidance to close the thrust levers prior to touchdown is more to do with preventing the thrust from creeping up during the flare itself. So, with a flare guidance of 20ftRA then the thrust is barely off prior to touchdown or should I say impact!!
To the poster who claimed never to have seen the spoilers deploy on bounces on base training surely this was more to do with them not usually being armed for touch and goes. (spoken from the perspective of a BTC on Airbuses for seven years)