Your post is confusing.
First of all, if you want legal advice , then you need to speak with an attorney experienced in real estate matters.
Second, it sounds as though you are not using professional representation. If this is the case, even more important to talk with an attorney.
If you ARE using a Realtor, then you should pose this question to them.
The truth is that in most cases acceptance can be withdrawn, however, as with most legal matters, there could be money involved (damages), depending on the facts.