Hm this is only a guess.

If you had individual control of the spoilers on each wing and moved them differently (eg. one at a time or with different amounts of deflection)
they could I think in theory act somewhat like ailerons but if they both are actuated by the same amount simultaneously then they would likely do two things

1) slow the plane down
2) possibly cause a bit of a drop in altitude

where as flaps can act to slow a plane down and help with lift