With new allegations against Hawks coach, Aldrich, in 2010 - Q is not going to be reinstated any time soon.
Sutter is an option and he would really shake things up in the room, especially if things got comfortable. Darryl would root it out, but it may not be sustainable.
Claude Julien could be a realistic option - more like Trotz - in terms of structure and discipline. Patrick Roy is another possibility and he can be a different kind of coach for this Isles team. If things continue to go south, I can see Lambert being replaced before December 1st.
Lou will remove the coach before any big trades.
IMO, there is too much character as well as talent on this team for the wheels to completely fall off. This team does not need to be a complete mess for there to be real change in the offseason. If the team doesn't make the playoffs, I think we can see a serious shake-up to the roster - I highly doubt Lou gets fired - IMO, I think ownership will give him the opportunity to shake up the roster before firing him.
Shaking it up, IMO, means no resigning Martin or Cal, a Palmieri Trade, Nelson or Pageau trade, and a new coach that brings in a new philosophy and new approach.