By the time of this report Esther McVey was advising the McCanns to come home so it was obvious by then that they would be questioned again and, because these interviews would be accusatory in nature, that they would be made arguidos.
Was it after these reports that Olegario Sousa said the McCanns were not suspects ?
I fail to see the relevance of either of your points. The fact of the matter is, somehow that information got transferred from police to the media (it would seem fairly obvious how that happened IMO) and it got reported by the world's media that the McCanns were suspects, long before it was officially confirmed. I can so no reason why, if the McCanns were suspects again, that this information would not have been leaked out (and you have even suggested somewhere on this thread I think that maybe the media know more than they are letting on) and been used as the basis of some story in the papers strongly hinting at their renewed suspect status. If it were true, then there would be no grounds for legal action anyway IMO,, provided the report did not stray into lurid detail of what they were actually suspected of doing. IMO All it need say is (if it were true): "It is understood that the Met are re-investigating the McCanns' and friends' versions of events, the Tapas 9 were re-interviewed under caution, no charges have been brought and there are no further details known at this time, a police spokesman refused to confirm or deny". Such media focus would IMO bring immense pressure back onto the group and might elicit a confession from one of them, if they were indeed guilty of something, and so would IMO be a useful tool for the police to try, if indeed it were the case that they were suspects which as far as we know from everything that has been said and everything that has been done as part of the investigation, they are not.