@scott.gonzalez - the documentation issue is one problem, the inconsistency with the datepicker (which uses Command) is another issue and then the fact that OS X interprets Ctrl-LEFT and Ctrl-RIGHT as a mechanism to switch virtual displays (and hence does not send these commands to the browser at all) is another problem.
The discussion with Hans is valid. Hans' recommendations are all spot on, so if the decision has been to use some combination of keys to address the timing/activation problem, then we should probably just change the Ctrl to add support for Meta (as with the datepicker) and update the documentation. We may want to go through all the widgets and make similar changes to al of them.
Additionally, to avoid JAWS popping out of forms mode on the tabs, we should add SPACE as a method for activating the tab in addition to ENTER.