[vektor]

I'll keep my story short:

-I got a D in one class 2 years ago in university
-This class is a prereq. for one of my classes next term
-If you get a D you need your prof to sign a waiver to let you in the class
-This is the only class I need for my degree next term
-The professor who needs to sign the waiver is a cantankerous old chinese guy. He's a miserable guy and he's been gone from Canada for 3 weeks and returns Sunday. I need him to sign that waiver, I've been emailing him and he seems like he is going to find a reason to not let me in and if he doesn't that pretty much ruins my career among several other things
-I need him to sign this form on Sunday or my life goes from pretty good to the gutter because I lose everything (scholarship, support etc.)
-how do I convince a cantankerous old Chinese guy to give me a break, does anyone have any advice?

-sidenote: this same class I got a D in was a prereq for several other classes that no other profs even cared about, they just signed the waiver with no problem but this prof who I'm seeing on Sunday has a hate on for life and he has complete control, there are no other people that will help me if he says no. What can I say that will make him not hate life so much to just sign the thing? I'm losing sleep about this and Christmas is pretty much gone if I can't get this done some how. I expect sarcastic remarks but hopefully someone has some helpful advice