Forgive me if I'm being naive, but didn't ATC, either approach or tower, notice that this approach was unusual?
At a rate of descent of 6000 fpm it must surely have appeared out of the ordinary, let alone the high speed of the final and touch down.
Wouldn't ATC have called for some kind of enquiry...... asked the PF to call the director at least?
What about other traffic in the area?
I know that FR fly to "secondary" airfields but the Stockholm airspace must be pretty busy even so.
SP