If you want to remove the knob on a manual transmission MK3 you will have to remove the knob/boot/surround as they are all one piece.
After they are off of the car you can split them apart but it is not easy to do if they are still on.
The knob spins off.
2012 Yellow Blaze Hatchback SE Sport Package
Green drop in filter | Steeda Tri-Ax Short Shifter and bracket | E-Focus RMM