Playing devil's advocate here, there is no statement as to the spacing requirements of the logo, the website states:
"The CE marking must consist of the initials "CE", both letters should have the same vertical dimension and be no smaller than 5mm (unless specified differently in the relevant product requirements).
If you wish to reduce or enlarge the CE marking on your product, you should respect the proportions of the two letters. As long as the initials remain visible, the CE marking can take different forms (for example colour, solid or hollow)."
So, to me, it sounds like reducing the distance is fine as long as the vertical proportions are maintained. They also allow for other forms with respect to colour and solid/hollow, and if they are that loose with those attributes, I don't think they are asking people to maintain specific grid spacing. Not a lawyer, however.