Chris,
Here are my answers for you...
1. Has PMI verified the PDU count?
PMI does not endorse individual programs or webinars. It is up to us both to do that. As the program provider I have to ensure that it meets the criteria that PMI has set up and as the person who claims the PDUs you are responsible to ensure that you claim the correct number in the correct category.
2. Is the spreadsheet updated before/after each podcast?
Of course! But not before/after... just after...