I wrote this case play as a member of the Editorial Committee back in 2001. My intent was to outlaw plays such as this and refrained from publishing a laundry list of illegal acts as if you list 100 a creative coach will come up with #101. IMHO, the brakes should be put on this play in pregame when explained by the coach.
While I deeply respect the 'original intent' in this

, I still think the black-letter of the rule and, indeed, the case play at worst make it ambiguous about this play but to me, make this play still legal.
The rule and case mention two elements required (both of which needed, since it says 'AND'): the snap not being imminent AND that there's a problem. Without another clarifying case or two, it's left up to each official what constitutes a 'problem'. Clearly, something up with the ball (the 'wrong ball' play) or missing a tee or something wrong with the clock would be a problem. But is the QB turning to the WR and yelling 'OMAHA' a problem? While that may or may not indicate the snap is not imminent, nothing in the case would indicate that normal football signals constitute a problem.
To me, without some further clarification or cases to further define what's a problem, that seems like normal football operations and thus a legal play.
As a thought experiment, let's just slightly tweak this play. Let's say QB is barking signals in a short shotgun/pistol formation. Single tailback behind him in a 2 point stance, standing up. QB stops yelling for a sec, then jogs out to the right in motion. Very quickly afterwards, ball is snapped to TB, who fakes a dive and throws to QB on an out route. Except for the QB yelling out a signal to the WR, this is nearly the same as this play. Is the yelling out of signals as the sole difference enough to say there's a problem? Not to me.