The cron process that clears out the trashed posts took just over 16 days to finish. That may have adjusted member post counts. The process was unable to run the regular wordpress way for about 2 years so stuff was building up.
I will be running some additional maintenance functions from the command line once I get some code into place to use them from there. These functions will correct member post counts, forum, topic and reply counts along with other cleanup tasks. Basically your post counts may still change once again. But once done they should match exactly what the database has stored.