Hi, here is just fine or you can email me directly.
If there's a noticeable performance regression with Wizard 2 I will want to look into it. Most commonly beach balls occur with a large number of categories present. This number should be limited to 150 when importing a file, but possibly something else is gumming up the works. If you can send me a link to the file off-list, I will take a look at it ASAP.
As for the "circle of doom" - you can either hold Shift while opening Wizard 2, or check the "Close windows when quitting an app" box in System Preferences > General. This will prevent the problematic document from being automatically reopened when you start the app. (Autosave and document restoration are new features in Wizard 2.)
Hope that helps
Evan