the.com/unsaddle
To liberate a horse from its leather furniture, or fling a rider toward the dirt.
means To remove the saddle from a horse, or to throw a rider off one.
from From Old English sadol plus the trusty un- prefix, undoing what the saddle did since the 1300s.
Double dutyMeans both removing tack and dumping a rider
Stable ritualFirst task after every ride, dirt or not
Figurative useAlso means to dislodge from power or position