Question About the Loan Process

Okay so here goes... my husband wants to switch jobs but before he did this we wanted to purchase a home to accommodate our growing family. We wanted to do this because we thought we could get a better loan with job security and because his new job he would not be receiving a salary (although its more money). We found a home and we are getting it appraised tomorrow, we are suppose to be closing on the 22nd of this month. The thing is hubby is worried because he has to have contracts renewed by friday and turn that in to his manager, this is the first time they have required this. His clients are not renewing because they are going with him to his new place. This will become very obvious that he is leaving if he doesn't turn in his renewals. (they already have an idea that he is leaving)The thing that we are worried about is our loan falling through if he gets fired by friday, he just wants our house to close before he gives them his notice. He doesn't care about the job its the house that we are worried about. Does anybody have any thoughts on this. Do they verify your job again after the house is appraised? We already got approved. Can the company call the loan people and tell them he no longer works there? They know we are purchasing a home, but do not have a direct number. Hubby was thinking about just calling in and saying that we have a family emergency and have to leave the country. I don't know about that though. (by the way this is some pretty bad people to work for so we are not being shady) I hope this made sense.