I have spoken with GM's a few times. Perhaps one comment from one of the GMs I spoke with may clarify what yours told you...

Bioware has no issue with multiboxers. However, Bioware, will not support any help while using a third party software. Any software used must not break the EULA... I.e. no injecting of code, copying of code, altering game client code, etc etc. No automated functions which would allow the user to walk away from the game and continue to play itself.