Don't think he's real calm. It looks like he had some trouble remaining on his feet. Probably, ack damaged him (note the way the rudder is sprayed with fragmentary damage), he was forced to land at an Aussie field (those ain't Americans behind him), and he had enough control loss to make his landing very interesting. I don't think the tail damage is the sole problem here. The gear has collapsed, and either those guys on the wing have never seen a Corsair, or something in the cockpit has their interest (probably damage). They are probably both thinking "Holy toejam he's lucky to be breathing!"
I bet he's glad to be alive.
It would be interesting to know the details.