Yes, please do! My guess is that one of the two solutions will be similar to either Ahribar's, Conway's, or mine, and the other will be something totally different.
I have managed to fix the backroutes, but I am a little reluctant to post this updated version. I'm afraid that the change might make the "real" solution significantly more obvious. I'll try to find another way to make Ahribar's solution not work, but if I can't, I will just update the level with the fix I have in mind. Also, I'll see what guest has come up with before updating it.
Edit: Level updated, should prevent basically all backroutes. In case anyone was wondering, guest's solutions were both different from all the others.