Well I finally bit the bullett and performed a wet clean with sensor wipes and eclipse fluid.
Shaky hands due to nervousness, two drops, using bulb to keep the mirror up (and taking out the battery)...
One swipe and there's a couple of bunnies left, one more and most of those are gone, not that bad after all

Yee hah!
Same cropped area of image before wet clean and after...

