Sure it is possible. ...but I think the S1 is more suited to spreading and/or adjusting your stereo field on a stereo track or mix. I'd think the use of different reverbs would better simulate the *forwards and backwardsness* of instruments in a mix. ...dry--up front in your face...and wetter/darker verbs--further back.
But..re-reading your post...."behind you"...sounds like a need for a surround sound system....or a very reflective back wall!!