I've been watching SC:Broodwar matches and there are tournament legal glitches/bug exploits that some professional players use in their matches.
For example, the Turret Bug, the Mining SCV trick (where you can make a unit go through a mineral line) and the Dragoon Hold trick (where you can make a Dragoon fire slightly faster by moving your Dragoon as soon as it fires then quickly pressing hold position).
Are there any glitches or exploits being used legally now in Starcraft 2 tournaments as if it is part of the meta game?