OK.... I've found the best way to get at the actual booking.
1) Sign up to TripCase if you haven't already
2) Under "My Trips" click "Create New Trip". Do *not* forward your booking confirmation
3) Give your trip a name "flash sale"

and create the trip
4) Then click on Link a booking
5) Enter the first PNR listed in the email from lastminute.com
Now if you go into Documents you'll see the E Tickets and you can see the full fare basis etc.