If your offer is already signed by the buyer, it would likely remain under your current broker. If it's signed and you delay submitting it, you would also likely be violating your fiduciary duty to your client. It would probably be a derogation of duty, too, if your buyer has directed you to prepare an offer but you're delaying for personal reasons, or worse, for personal gain, ie. better commission split. If you're a Realtor, you might want to consult with CAR legal about this. Best of luck!