What Christian bands sound like Seether?

No.

Take a look at the titles of their songs, which says it all...

On their Finding Beauty in Negative Spacesalbum...

(Now #7 is titled No Jesus Christ.. but its has nothing to do with not believing in Jesus.. its says "You're no Jesus Christ" so it's speaking to someone (most likely a Christian) who is being judgmental

69 Tea But this song says "Save me smiling Jesus/ Get off that cross"

He also says in an interview here:

http://listenin.org/player/playpost.aspx?PostID=19536

Let's hope they stay the way they are.