Was John Key telling the truth about the Malaysian Diplomat?

John Key has claimed that New Zealand asked Malaysia to waive diplomatic immunity for the Diplomat charged with breaking and entering and assault with intent to rape.  But news is breaking that Malaysia was willing to waive diplomatic immunity but decided to take up New Zealand’s offer to invoke diplomatic immunity.  So who is right?  And if the offer was made why did John Key say otherwise?

Update: From a McCully email it appears Malaysia thought that refusing to waive immunity would be acceptable to New Zealand.  Details of the “informal communications” need to be released so that we can judge for ourselves what was actually discussed and agreed to.