I have not gone in to it yet but a simpler way maybe is to remove the road speed signal at the engine ecu. I have only got the wiring diagram for the non abs model (mines abs) however it looks like the speed signal is hard wired to the speedo, engine ecu and abs cu separately (no can bus) if this is the case it would be easier enough to try. I wouldnt think it would set a fault because it is a normal situation (bike at standstill). If Honda use fuel shut off, that would explain the issue of the sharp turn while moving irritating throttle snatch I get.
Twice on my commute going downhill braking and turning right quite sharply. Also the irritating snatchy throttle going over bumps on decel.
First things first though I have to find if they use throttle shut off!
By the way, looking at the way the idle increases with the pair connected it shows that the pair system is actually helping to overcome the back pressure of the cat/exhaust system and speed the exhaust gas's out.