I'd say that playing from notation and notating what's played are two very different things - in the latter, any difference between notation and execution means that it's the notation that is inaccurate; and in this particular case (as with quite a few others) the traditional notation system is too limited to properly notate this part of the song, as that 5/8 measure is the closest thing that can be reasonably written, but it's wrong because that part of the song is not really 5/8 but something like 5.3/8 ..