I recommend going to
www.pcrm.org - they have an eat healthy online club with videos, and dr. barnard has a book specifically advocating a vegan diet for diabetics which has lots of diet info for blood sugar management for vegans. The online resources are free and geared towards people with blood sugar and insulin issues.
I must confess, I've been ovo-lacto vegetarian for 10 years (and actually just started eating fish because my doctor pretty much demanded I increase omega 3s substantially and immediately).
I would think nuts and nut butters would help, and even though you don't like soy meat substitutes, what about a low-sugar protein shake? There's a company (I think called Vega, I could check if you are interested) that makes a lot of vegan health shakes.
Anything high fiber should help decrease sugar spikes as well.