If you run Deep Creek towards Arrowhead, that would be doing the trail backwards. I don't think it really changes the difficulty, main difference being that instead of climbing the most difficult obstacle, you would be descending it. Deep Creek really isn't that bad, just lots of washouts/gullies to flex through. When I ran it last, it was with a bunch of 80's and one 40. The FJC's that were with us (lifted and quite capable) decided not to run it. We had just run Holcomb Creek and I think the FJC guys were pretty tired after that trail. The rock gardens didn't stop them, it just took a lot of time and spotting to get them through. Holcomb isn't rated as difficult as Deep Creek, but the IFS guys had a smashing good time (pun intended). If you run Holcomb and have IFS, you will use your skid plates.