Not possible without some hassle...
The "stereo delay" is set to cross-feedback between the channels, so any hard panned signal will have the first delay repeat on the opposite side, and then it will "ping-pong" between the channels. I wouldn't call it a ping-pong delay though, as it's stereo, but it's strictly cross-feedback.
A workaround is possible, but not "on the fly" by just switching patch. You could connect both stereo outputs, and hard pan the parts on a mixer or DAW for instance (à la The Musical Synthesizer/Sacred Synthesis
) Probably the best solution.
Or you could hardpan the layers, connect both stereo outputs, and instead use just one output channel from each. But this would make every other repeat "vanish" on each layer, effectively doubling whatever delay time you have set.