I think the OP is walking on very thin ice. Sure he could help but one whisper to the Thai police or immigration and he would be detained for not having a proper work permit.
That was what I thought. THAI consulate and mom's blessings and Thai passport and birth certificates and reams of paper work. Egad this means I will have to talk to the ex. The horror.
As a sidebar...once I get the affidavit the first time can I just use that each yearly visit or will immigration expect a newly dated one. The original approval will be the Thai consulate in Canada.