The chiropractor wants ice after an adjustment because he has realigned your spine and doesn't want the muscles contracting to pull the spine back out of alignment. The surgeon sees the same problem -- the muscles pulling the spine out of alignment and he hasn't moved your spine so he wants those muscles to relax and solve the problem on their own. Essentially, they are both right.
Some chiropractors are too forceful. I'm always looking for someone trained in the Palmer Method. They seem to have the perfect balance.
Your ortho is right about finding a new chiropractor, he didn't recommend one?