I finally got around to implementing a tangential cutter on my CNC Router.

For the most part it works perfectly. However, I ran into a problem today. While cutting, the A-axis decided to do a complete 360 while in the work piece, thus breaking the blade.
Here is some code. The problem area is in red.

N41 X22.7906 Y42.6157 I-199.1111 J3.6294
N42 X22.7972 Y44.3367 I-246.2958 J1.7973
N43 X22.7927 Y46.0598 I-296.7644 J.0919
N44 X22.7707 Y48.6082 I-403.4062 J-2.2175
N45 X22.7452 Y50.5231 I-637.1075 J-7.5273
N46 X22.7158 Y52.389 I-1028.4651 J-15.2428
N47 X22.6694 Y55.1711 I-21217.2197 J-352.9641
N48 X22.6416 Y56.8231 I-1296.3413 J-20.9377
N49 X22.6077 Y58.4932 I-288.6039 J-5.0292
N50 X22.5541 Y60.3395 I-158.819 J-3.6871

I broke out my g-code book to understand the I's and J's, but I have no idea how to fix this problem.
I am using a circular cutter. I have mach 3 to pick up 1" when an angle changes more than 45 degrees. I use BobCad to create my G-code.

Thanks
Ben