Pat MacKenzie
The rules you quoted are correct for the 2011 - 2012 rules but the 2013 - 2014 rules were changed to allow 2.4 GHz radio control of functions not associated with controlling the flight in elevation.
Control Line General 2013 - 2014 rules page CLG-2 2. General. "A Control Line model is flown on one or more' steel or GSUMP, commonly referred to as Spectra or Dyneema, lines' steel wire line(s) or metal line(s) of equivalent strength, attached to the model in a manner providing aerodynamic control of the model's elevation through manipulation of the control surfaces during flight."
page CLG-3 "The use of radio control to accomplish any control functions on Control Line models is specifically prohibited except as follows. The use of 2.4 GHz (utilizing spread spectrum, 47 CFR Part 15) radio control to accomplish functions other than providing aerodynamic control of the model's elevation on control line models is allowed, but only to the extent and in the manner specifically allowed by the rules of the individual event. All control functions must be under the direct control of the pilot and only the pilot."
Control Line & Radio Control Fixed Wing Scale 2013 - 2014 rules page SC-3 under CONTROL LINE SPORT SCALE for event 509. 1. General:
1.1 Use of Radio Signals. The use of 2.4 ghz radio control signals shall be allowed for controlling auxiliary mechanical operations, including but not limited to throttle, flaps, retracts, landing gear doors, droppable stores (bombs, torpedoes, fuel tanks, parachutes, etc.) Radio control cannot be used to provide aerodynamic control of the model's elevation. Elevation must always be controlled by way of one or more control lines which manipulate the model's control surfaces during flight by traditional mechanical means, as mandated in the CL General Rules.
I see no contradiction!
Clancy