Re: Cal 2-27 spreader failure and mast bend
To some extent it depends on what you hope to get out of the boat. A bent then fixed mast will always be less stiff than a new one as a function of the damage done to the underlying metal. However, if this is going to be a daysailor/weekender then I probably isn't a real concern, the damage is unlikely to be so severe than moderate weather and loads will cause problems.
If you want to seriously race the boat then the lack of stiffness, particularly the asymetric loss can be a big problem (this is why my J-22 has 2 masts a cruising and racing one). It can cause your sails to set slightly differently on different tacks, and will make mast failure more likely in lesser wind speeds.