Sorry but could you please explain to me what is illegal about technic pack? The pack only makes it easier to install all those mods without a bunch of troubleshooting, the guy gives credit to all the mod owners of the mods in the pack. The pack does not edit any class files in any of the mods. Notice the IC2 creators could have easily done what you did yet they chose not to.
So please explain to me why exactly it is illegal; Do not use shallow arguments, explain in great detail exactly why, backing up all of your arguments.