Sounds like another Air Baltic, Air Slovakia senario...what is it with these Eastern European countries for just messing people around, it really is unfair!
Regarding TR's, they did ask me and 3 other people I know for an interview and all of us did have a B737 Rating..
By the way there is a SIM check in Luton if you pass the first round. Thats what the guy said to me when he rang my mobile, however I did not go to the interview in the end.