This will only delay HL2 and cause all sorts of problems for Valve and HL2.
Im certain that the person penetrating Valve was concerned that his trusty wallhack, aimbot, and ghost hacks would work. I honestly dont see why people cheat or bother with the release of code like this. Might as well set your computer up to play by itself. You only prove how pathetic your gaming skills are and how you like to hurt a companies product.