It is also worth mentioning that he he intimidated the (Somali?) taxi-driver into changing his story - as well as enticing some comments from the other "dancer" early on as he gave her a break on something associated with her embezzlement case.....IIRC, it was a technical violation of her probation that was pending against her at the time.
Elmo (taxi driver) didn't change his story. He made a mistake on the time he went to the lax house on his SECOND call there that night, which was after he dropped Reade off so it really had nothing to do with Reade, and the correction actually helped the defense, not the prosecution.