Technically you will breach a bunch of terms. Question is: Does the person processing a withdrawal request notice the spin speed is off hook? I guess that wont be 100% accurate. Although its not that complicated on our end which I've showed Colin yesterday in a PM.
All I can say if you aim to use this service, I strongly advice you not to do so when there is a bonus in play. Gameplay normally is checked more in-depth when bonuses are in play.
And if I see you using it on our end, I'll report you to the UKGC