entrou no quarto munido da chave respectiva estando a porta trancada
entered the room with the respective key, the door being locked
http://www.mccannpjfiles.co.uk/P1/01_VOLUME_Ia_Page_37.jpg
The PJ officer is
summarising his understanding of Gerry's account. IMO ''the door being locked'' could be his own interpretation inserted to identify which door (i.e. the locked front door -which needed a key) which he may have genuinely but mistakenly believed Gerry was referring to - if Gerry
had been referring to the patio door as the 'front' door.
IMO it is very noticeable that the PJ never revealed the reasons Gerry gave for making changes to his statement - which imo were made after he saw his statement in English and realised there had been a misunderstanding about the doors - and which he then pointed out to the PJ at his next interview.
I do not believe that Gerry would have asked for his statement to be changed without giving the PJ his reasons for making that request. Similarly, I do not believe the PJ would NOT have asked him to explain his reasons for making such a
major change. If the reasons he gave were considered by the PJ to be 'suspicious' in any way - then IMO they would most definitely have been recorded in his statement as potentially crucial evidence. So why didn't they record them?
Could it be that if the PJ thought their own interviewing officer and/or the interpreter had made 'mistakes' during the interview - they preferred not to mention it? - although IMO it is very easy to see how misunderstandings could have happened. Taking into account all of the circumstances surrounding that first interview - I wouldn't blame anyone for any errors which may have occurred.
However, if anyone believes that Gerry claimed to have ignored the unlocked Patio door a few feet away from him and took the long route round to the front door - then they need to come up with a reason why he would decide to make such a strange claim - for which he could provide no credible explanation whatsoever - as far as I can see - (especially if he needed the Loo).
What would he have to gain by claiming that he did not enter 5a via the patio door? AFAIAC - the answer is 'zilch'.
All in my opinion.