Hi,
That is exactly what happened - the invite deleted from my calendar without sending the cancellation to anyone else on my team. No one at my company in our Support Team has been able to fix this either. Every single individual on my team still has this invitation, except me. I have tried to pull the invite back from my deleted mailbox, my sent mailbox, others' calendars, and have even tried an Outlook Repair, however, nothing is working. In every one of those instances, the invite appears on my calendar as a participant rather than the organizer.
I have attached a screenshot of how the meeting invite now appears on my calendar - you can see that I am the meeting organizer, however, I am also unable to make any changes to the invite. 