If you go to the Johnners website, then look for gaffs and giggles, you will find recordings of a few, one of them is Johnners in conversation talking about it (not the actual commentary itself), in the conversation he ays even he doesn't remember saying it BUT he does remember the lady that wrote in to complain about it. It would appear from that Paddy, that no recording exists of it
As an aside it does have an actual recording of the Johnners / Aggers giggling fit when they were commentating on how a certain batsman managed to get himself out hit wicket, when aggers said something like "He just couldn't manage to get his leg over". Wortha listen in itself