If you're nervous about it, you might do well to find a tool repair service to remove it for you. I personally have no interest in repairing machines. Using them, yes, fixing them, no thank you.
I’m an idiot I have extra collett ans nut and I picked up the wrong one, I evidently had a collett in the spindle stuck not realizing it was there. It was a da momentif she can push the router nut back on the collet nut , she can thread it back on enough to pop it loose.
i believe she over tightened the router nut and the collet is jammed tight
Ive seen these separate in the shop several times. They do wear..,