It could just be that those leaves were already older...? Given you found a number of dead roots the plant may be giving up those older leaves b/c it's decided it doesn't have the 'power' to use them right now. How's that top leaf look, weak or wobbly at all? It's when you lose leaves higher up that I begin to worry. I'd say just keep an eye on it at this point. Repot it but don't smother the base/crown & be REALLY careful not to let water sit in the crown.
I've learned & heard that the no water in the crown rule is not hard & fast however I think it's very critical for already stressed plants and especially if it's cold and/or the plant has been really wet.
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