forgotenplane- there are two ways you could build an R/C aircraft without resorting to a flying wing: use two pusher engines or use airbrakes. Both would have to be mounted pretty far away from the airplane's centerline. An example might be an airplane that looks similar to that X-36, except with with two pusher engines mounted on the back of the wing, or one pusher engine with airbrakes way out on the wing. Either way, if you ditch the vertical stab altogether, the yaw control system will need a gyro to give it stability (without a passive stabilty system, an active is needed).

One caveat: do NOT use spoilers. Raising one spoiler at a time will give a yawing moment, but it will also give a banking moment also. This is great if you want to make a turn, but not if you want the plane to fly level in a crosswind.

Also, the fuselage itself contributes to yaw stability. If the tail area is flat vertically, and the nose is flat horizontally, that will help, and it might not look as if the plane has a real vertical.

Anyways, good luck, and post some pictures of the completed plane