I'm fairly new to blender. Let's get this out of the way. This will be poorly explained, but explained to the best of my knowledge. I've been working on modelling a head and I now need to extrude a few points on the x axis. The problem is, they seem to have restricted themselves one of the axis. I can't move the original points or the extrusion along any other axis. I know it isn't intentionally locked on because when I press the X, Y, and Z buttons, they all lock on at different angles. What I'm trying to say is, i didn't lock it to anything but I can't move it any way but on some weird version of the Y axis, if that makes sense.
I need to move the points freely. Not locked onto anything. Help me. Please.
EDIT
There's no constraints. Nothing should be actually stopping it from moving along the X axis. Nothing that i've checked is locked. 
That, in the picture, is the only way I can move the verts. I wouldn't be able to drag it along the X-axis if I wanted to.