I don't know if he tried releasing the knot or if it was one of the unbreakable knots that caused him to start cutting the line. When you get the knot in the baitcaster you can apply pressure to the spool with your thumb and crank the reel at the same time. Then try pulling the line to see if the knot released. Keep pulling until you come across another knot and repeat the process. There are videos on youtube that show the process as well. I was getting bad backlash due to not setting up my reel correctly and would end up cutting the line due to the frustration. I learned this technique and it has worked wonders and saved me money on some expensive line.