BBB,
You may be chasing a red herring.
A faulty TLA sensor recording on the FDR would not correlate with the other data, so it would stick out like a sore thumb during analysis, especially since it would be somewhat improbable to have occurred just at touchdown.
I would certainly put the TLA 'as found' after the crash into the dossier, but I would not call it "VERY important", unless I could correlate it with a lot of other data.