RWA,
At the previous landing but one, at Congonhas, with a different crew, both thrust levers were reduced to idle, then #1 was put into reverse.
At the previous landing, at Porto Alegre, both thrust levers were reduced to idle, then both were put into reverse.
At the accident landing, one thrust lever was put into idle, then reverse, and the #2 was left at CLB detent throughout the incident recording.
Source is the "standard" copy of the FDR transcript.
I don't remember what the sources are for which pilot flew which leg.
If you don't have the "standard" copy of the FDR transcript, the URL for it is on our WWW page on the accident.
One may conclude from the observations above that TAM crews did not use a SOP for handling thrust reduction on landing with one reverser locked out.
PBL