OK, I understand now, BUT speaking for myself only, the statement I gave just recently to LE in a high profile case (1st degree murder) was true.
I know that I will be called to testify, but in all honestly, doubt very highly that the defense will be able to help me "remember" anything that was mistaken in my original statement (and the 2 given afterwards) and if they did help me to remember anything, it wouldn't help the defense.
You are either telling the truth or not...period. From the statements in this case, the only one that has been proven that they lied, was Casey, by her own admission. I doubt that Jose will allow the Prosecution to question her concerning this, so her statement can't be evidence? Her statment is evidence, just like the other statements are evidence.