Grilled Salmon Salad

INGREDIENTS:

2 lg Ears corn; unshucked
1 1/2 ts Chipotle powder
1 Stick unsalted butter;
-softened
3/4 lb Piece center-cut salmon
-fillet, cut into 4 pieces
-(each about 4 by 1 1/2 by
-1-inch)
4 Fresh epazote leaves;
-chopped
1 tb Thinly sliced scallion