It wont break instantly unless you keep pressing the spacebar until it does. Lightly press the space bar and observe the wiggle, you can see if its going to break. This is part of the fun. Simply mashing and holding the spacebar will always break the pick if its in the wrong position. Press and replace the spacebar to have a fine touch to evaluate the current position.
I'm happy that someone actually tried the mod and provided some feedback. A lot of work went into making this minigame possible, and I see at least one of the big mods has added their own version of the locks (no credit given as far as I know, but that's modding). Thanks for the input.