I had a hard time finding any solutions with the splitting glyph under a trash hexarm. This was the only layout I found. The hexarm seems like it should be able to do more things at once, but it's main job is just moving the trash around. 1P solves need to handle the worst case when the trash ring is almost full. That's 15 instructions just on cycling the empty tile back and forth.

The space seems too constrained for anything other than 1P, but as always I look forward to being proven wrong.