Renderer and edit for boolean (logical) values in a JIDE table

I have started a table class from the com.jidesoft.grid.SortableTable and piping the DefaultModel through SortingModel and Filterable models. Everything works very good, except that booleans are not rendered (and edited) as logical values. Column Class are java.lang.Object. getValueAt() return logical... Any suggestion?

Bonus question: how do you remove a single column? (from model-space and view-space).

Bonus Question 2: Could there be mem-leaks? Im using the "javaObjectEDT" calls for all Java objects (except arrays)...