Ok, confirmed, still the same event, no additional ping event. Here is the event:
wpseo_ping_search_engines [] 2013/06/15 15:04:54 (22 hours 52 minutes)
It shows the ping schedule got initiated slightly more than 1 hour ago, and nothing will sway its course unless I delete it.
And here is the create sitemap cron doing its thing, 1 minute past already:
wpseo_hit_sitemap_index [] 2013/06/14 16:16:54 (4 minutes)
If I update anything before it is finished in 5 minutes, it also does not add a new create sitemap event.