The most important statement here is: “Family members who were not declared and examined are excluded from the family class and may not be sponsored at a later date as per R117(9)(d) unless R117(10) applies.”
R117(9)(d) states that “A foreign national shall not be considered a member of the family class by virtue of their relationship to a sponsor if (d) subject to subsection (10), the sponsor previously made an application for permanent residence and became a permanent resident and, at the time of that application, the foreign national was a non-accompanying family member of the sponsor and was not examined.”
It is important that you or your husband contact a lawyer who is familiar with Canadian immigration applications and laws for some information and clarification regarding this situation.
Before contacting a lawyer, you may also want to try and contact the Citizenship and Immigration Canada (CIC) Call Centre directly to see if they can help you by providing some additional information and clarification regarding this situation.
I hope this information is helpful. Please let us know if you have further questions and if there is any follow up to your question/situation.