Just soften up the oats with the chili sauce. I'd probably use a little more chili sauce or salsa to make up for the moisture loss from the lack of yogurt.
I made another batch last night and used muffin tins instead of loaf pans and it turned out really well. Portion control 
That is a trick I use for meatballs. I have a medium size muffin tray. I make the meatballs big enough that they don't touch the bottom and what this does is suspends them enough for the fat to drip into the tray as opposed to having them boil in their own fat.
As for soaking the oats, use hot sauce, worchestire (sp?) sauce, if you mince your onions enough the juice runs out so I mix that with the oats, plus letting the loaf set in the fridge also lets the oats soak up moisture and soften.