I’m not sure that it will help - my goal in making the change was to eliminate an unnecessary API call. The updated code (version 1.7.6) is available in the WordPress repo now.
Yes, it actually does create a log entry when a new user is created, but not when a user is updated. The log entry will begin with Verbose SSO log: New User (user_id:.
If you can share the code that you’re using to hook into the wpdc_sso_params filter, I can test it out.