I know that feeling, getting Ben to Bend to the right is like bending a 1500lb brick wall. I let him warm up normall first, then halt and ask for a few bands, and then with his head bent I ask him to move his hind quarters off my right leg. I then ask him to bend at the walk with alot of leg (and spur if needed) and sponging and half halting the inside rein untill I feel even the slightest bit of softening. If he gives a bit, I release the presure and tell him he was good. Lots of circles, serpentines, and sppirals help
Ill definitely keep this in mind for tomorrow! :) Thanks!