http://climbsworegon.com is a companion site to the "Rock Climbing Southwest Oregon" book. I don't have direct knowledge of Acker rock access or beta, but on the BB of the above site the Tiller Ranger District posted the following on July 12:
"The seasonal closure on Acker is now lifted. The resident pair is still present, but by all appearances has failed to produce young. A young falcon was found below the rock on road 29, but it seems to have come from another site. If, when climbing Acker, you find a ledge with broken eggshells, dead chicks, or anything that makes you think the falcons may have attempted to nest there please contact the Tiller Ranger District 825-3100, or the US Fish and Wildlife Service 957-3474. We appreciate the monitoring efforts from the volunteers who helped out this season."