My bad... I am referring to the stick
Oh, no doubt.
In that case, no you cannot replace the blade on a one-piece stick. If it's still under warranty (you purchased within the last 30 days), you can send it to Bauer with your Proof of Purchase and they will send you a new stick.
The only other thing you could do would be cut the blade off entirely,
purchase a replacement 1S blade (just the blade) and insert the blade into the top of the shaft. You've now turned your stick into a two piece flipping it upside down, the bottom of the stick is now the top and vice versa. So the bottom of the stick that used to house the blade is now the top of your stick.
Note that the kickpoint and flex point will probably be off now that you've flipped the stick upside down and turned it into a two-piece, and the puck feel might be different now that it's a two-piece vs a one-piece.