We also play that the hero has to stop moving once he makes his attack, i.e. cannot "interrupt" his movement to attack.
In principle I agree - "moves" that are not "movement actions" clearly don't get the MA-specific "interruptible" clause. Same with Jain's feat for example.
I could probably be convinced to not see the "and" as chronological though, ie I might consider "attack, then move" as legit. As long as the move isn't interrupted for the attack.
Gotta study moar cards when I get game to see if "and" often carries "and then" implication. Didn't excessively strike me as such from spoiled material.