After the Ice Loop, you can ride to the top of the Inner Loop and go down the regular direction or about halfway along the reroute on top of the hill there are flags to the right that put you back on the Southhill descent. This uses some of the dirt piles to add a few ttfs. Basically, you ride the old trail onto the dirt piles and back off onto the trail.
Note: If construction equipment is active, do not ride in that area.
This option is temporary and may last a short or long time, depending on how long the Parks take to finalize the grade and remove their roads.