I will repost this again. Please contact an immigration lawyer without any further delay. Likely, submitting the application alone will not be sufficient in your case. Based on what you have said before, your interview has been scheduled, it is at that ophone interview they will inform you of your rights, and that being a PRRA application. This application will assess if you are at risk if you are returned to your country. Please Violetblue, as great as this forum is, you need real help, someone who can be with you and represent you during this interview.
Before removing someone from Canada, immigration authorities are required to see if the person faces some risk in returning to their country. Accordingly, the foreign national is called in for a “pre-removal interview” where they are served with a notice informing them of their right to make a “pre-removal risk assessment” (PRRA) application. If they make such an application and are found to be at risk, they will be allowed to remain here and to apply for permanent resident's status. If such an application is not made, or is made but refused, the person is removed.
Subject to certain exceptions, if the sponsorship application is filed “inland” before the foreigner is called in for a pre-removal interview, by phone, letter or otherwise, the applicant will get to stay here until their sponsorship is finalized. If they submit their sponsorship application after the call-in notice is issued, they may be removed from Canada even though their sponsorship application is still pending.
Since i think you may have already been served with a PRRA notice and since you have not yet submitted your sponsorship paperwork, you may not benefit from an administrative deferral and can be sent home even if you send in your sponsorship application now.
I am not sure if the agent can grant a stay of deportation merely on emotional basis. I think your case is definately better off if handled by an experienced imm. lawyer.