In Savage Worlds the rules for Area Of Effect say that if you miss your throwing or shooting roll, the blast deviates, and they reinforce this by saying you move the blast template.
I added emphasis because the way I interpret this, the line of sight does not change and so you can actually end up throwing a grenade around a corner on a botched throw.
Now this makes a bit of sense for a grenade, but how about a Bazooka?
I guess what I am really asking is if after you figure out how far and in which direction a blast deviates, do you then check to see if there was anything in the way between the target and the person who made the attack?