That's a possibility, yes. My gut-feeling is that he believes whatever is profitable for him.

Two years ago he wanted his factories to continue producing cars and didn't see the virus as good enough reason to stop, now he seems it see it as enough of a reason to not appear on a disposition, after apparently having been infected twice already.

You can also constantly find pictures and videos of him being around people etc. Musk said that the interviewing attorney had contact with an infected person 4 days prior. Yet, this attorney tested negative multiple times.

So why is a disposition suddenly an issue?

Probably because he doesn't want to attend it, or rather, wants as much time as possible to prepare with his lawyers.

That's just my speculation, of course.