I'm in a college dorm room and my desk is facing a corner (moving it would not be feasible). So placing my speakers in front of me is not an option.

That leaves placing them to the right of me and placing them behind me. I've got them to the right at this point, and I've been noticing that it seems to be wearing on my ears unevenly, if that makes any sense. I'm wondering if placing them behind me is a good idea (the reason I haven't tried it yet is 'cause the wires I have right now aren't long enough, so I would need to get new wire to try it).
Here's a little drawing of my room. The x's mark the two arrangements I could have for my two speakers.
<pre>
|----------------------|
|DESK x |
|

x |
| |
| x x |
|----------------------| </pre>