Hey Hey
havent tried this… but copy and paste to the object then link that to a null, appropriately rotate the null (90 degrees), then rotate the object back to you so its facing the camera again…
is that clear? hmm basically rotate an attached null to send the path off back in z space. or you could just past the motion path on to the null and attach an object (your layer) to it, but perpendicular… making a t shape
let me know if it pans out
JC
in the shade