I seem to recall recently, a member adopted a rabbit off craigslist from somebody who needed to rehome their bunny. The ad was very well typed out, outlining the bunny’s story…it discussed how the bunny was taken care of, and the expectations of the same. I think the previous owner had specified that she wanted the bunny to go to an owner who was very familiar with rabbits.
If you choose to list on Craigslist, you could do something similar – make it very clear that the rabbits are dear to you, and take care to interview the potential adopters. Don’t just see that they have a cage, food water, etc…make sure they are used to taking care of rabbits up to the standard you expect (not just a promise to do so). I suspect some people may be put off by you wanting to thoroughly investigate their rabbit-keeping standards, but somebody who truly understands your situation and is willing to love your bunnies as much as you do should not mind in the least and should have nothing to hide.
I’m sorry that you are in such a situation, and hope that things can work out for the best.