My friend, you are a genius! Here's how I fixed it:

Code:

---

if(key_w == off && accel > 0)          //if you let off on the gas...
			{
				accel -= .5;           //decelerate
				if(accel <= 1)         //make sure you cannot go backwards when accelerating
				{
					accel = 0;
					absSpeed = accel;
				}
				if(accel > 0)
				{
					absSpeed = accel;
				}
				c_move(my,vector(accel,0,0),nullvector,glide);
			}

---

thank you very much