This is one of the weirdest comments I've ever read. If she both withdrew as a witness and recanted her previous witness statements, as we know she did, that is both withdrawing as a witness and new material. This does not mean, or even in the slighest even imply, that anyone lied.
Arnold also never said that the longer audio explained anything, only that it exists.
Well we know that the victim tried to withdraw from April 2022. Charges were made in October 2022 despite this.
The CPS do not make decisions over someone's guilt, only if they should face a court. The two questions the CPS has to consider when making charges are "Does the evidence provide a realistic prospect of conviction?" and "Is it in the public interest to prosecute?"
In October 2022, after the alleged victim made attempts to cancel the investigation, the CPS charged Greenwood because the evidence at the time provided a realistic prospect of conviction and/or it was in the public interest to prosecute.
Between October and Feb 2023 the case was closed due to witnesses withdrawing and new material coming to the light. If the new material is a redacted statement, the likelihood is that redaction is from April 2022 (or not long after) and was already known to the CPS when they decided to press charges. So this wouldn't have been new material - it was already existing material they were aware of at the time of prosecution.
The likelihood is that the new material isn't a redacted statement and I think you know this too. Nothing in the timelines we know or the information in the public domain suggests this.
You, and myself, also do not know what statements were provided by the alleged victim to begin with and any redactions made. What we do know is the alleged victim did try to cancel the investigation 5 months prior to charges being applied.
For full transparency and to ensure we are both talking about the same thing. Can you possibly provide a source which expands on this point, "You can withdraw as a witness without recanting the statements you've already made". It would help me understand your theory better if I can read the legal text which explains what you're suggesting. I'm struggling to find anything myself so feel we need to clarify this.
Richard Arnold clearly said that the audio was a part of a longer recording alongside saying he was provided alternative explanations for the recording.
"We were provided with alternative explanations for the audio recording, which was a short excerpt from a much longer recording"
Explanations is the operative word of course and the following line is further evidence he likely didn't listen to it "While we were unable to access certain evidence for reasons we respect".
They does not mean the CPS didn't access it and that it wasn't potentially the new material which influenced the case being dropped. If the CPS didn't have access to it then Richard Arnold's statement could incriminate whoever was in hold of the tape for perverting the course of justice through the withholding of crucial evidence.
You seem to discount the likelihood that the new material referenced by the CPS is an extended audio or other evidence. Instead pushing that it's actually a redacted statement from a witness who attempted to cancel the investigation 5 months prior to Greenwood being charged. In which case its existing material and not new material.
Unless you believe it was redacted after October 2022 which would imply Richard Arnold is lying or knowingly being misleading when he says:
"The alleged victim requested the police to drop their investigation in April 2022."
And lastly please do provide your source which explains your witness withdrawing/redacted statement claim better as this will allow me to better understand what you're suggesting happened in the timeline.