Damn. There's a million of those modules out there and they all seem based on a single design which doesn't provide access to the enable pin!
Also, what the hell is with being able to buy 50 of these things for less than $2 each, but the chip all by itself would cost me $3.30 from Digikey at qty 250? Even if I bought TEN THOUSAND OF THEM, it would still be more than the fully assembled board!