Red Lobo,
I'm curious, did you get multiple pics in a row, or did you get multiple pics during the night due to multiple visits? The yotes I have caught on camera were travelling through (running trails) and I didn't have any bait or scent out to stop them, so there were no chances for me to see how they reacted to the flash.
The other thing I will say about deer and the cameras, is that noise from the camera is a much bigger contributor to spooking them than the flash is.