For -1 Well if Spain win 2-1 I get my money back?
I never knew that
No, you wouldn't have. You can back the tie -1, so your bet would have been a loser at those odds. SJ offer that bet, and Asian HC. So you can take the half points if you want, or you can back with the tie in play and get a better price.
Edit - apologies for the essential re-post, as I now see Henry already addressed it.