Can the BlueSmirf Gold bluetooth module communicate logical HIGH/LOW instead of serial?
Yes, the module is capable of using some of the pins as GPIO (general purpose IO), but unfortunately, the board doesn't break any of the usable pins out.  You'd have to solder another connection onto one of the unused pins.  PIO9 on pin 32 (the 4th from the left on the top) isn't multiplexed, so it's probably the least troublesome to use.  To do so, send the following commands (taken from the GPIO section of the advanced user manual) over the link:

$$$          enters command mode (no other commands for 1 sec before and after)
S*,0200      drives GPIO-9 low
S*,0202      drives GPIO-9 high