So, let me get this straight.  You pick 3 teams and adjust all three lines however you please.  If you win all three, you get paid (almost) even money ($19 on a $20 bet).  Is that right?
 
And your offer here is that I pick the three games, and you'll pick 3 winners (with a 7 point adjusted spread in your favor).  If you get all three right, I pay you $10.  If you get any of them wrong, I get to ban you?
 
Now why in the world would I risk $10 when I could ban you for free if I wanted to?