With Bosnia's performance yesterday, they will definately make it to the world cup.
I didn't watch the match as I wanted to and I was only watching from time to time, but from what I could see it was an amateurish 1st half from the Bosnians. They were so scared and so confused that they indeed looked like Uzbekistan, as Swag said. After they conceded it was a little better because they didn't seem scared anymore, but still all their problems were obvious. Very slow defense and midfield. The only movement they had was on the wings and by the strikers. The one who is supposed to create the play, Misimovic, was a ghost.
What i'm saying is that with their performance from yesterday, they surely won't make it to the world cup, contrary to what you're saying.
They'll be missing important players, especially the captain Spahic and Rahimic, so it's another handicap. The result from the first leg is even bigger handicap. The defeat was probably deserved, but Bosnians must have scored at least once with the 2-3 100% chances they had. 2:1 defeat would have been different than 1:0.
If they approach the match without fear and with confidence that they can make it, then it will be interesting, especially if Misimovic starts performing.
In any other case, they're surely out.