Yes the shaft will have to come out.
Carefully remove the shift linkage(8mm) and remove it from shaft. Pop the seal out with a pick. This will allow you access to the snap ring retainer clip. Use a set of small snap ring pliers to remove clip and this will allow the shift to remove. Take your time during the mark up process after you have the old bracket cut off. You can cut right across the top/weld. Then knock the bracket off.
Make sure you hold the forward and reverse gear in place when checking the orientation.