Sorry, not many peeps on here at this time...
Is everyone ok? Is everything ok with the boat? Any damage?
I am not sure if this is the best thing to do or if it can be done with your trailer since you have an XStar but if you need to get somewhere within reason, can you ratchet tie the axle up to the main part of the trailer to prevent the rim/hub from dragging. I know this can be done with our 190 but our boat is way lighter than yours.
Sorry I cannot be of any more help! Too far away...if you were within a few hours, I would be out the door right now.
Sorry, just re-reading your post and you made it home...someone from the west coast should be on by morning and should have some info. for ya...good thing tomorrow is Saturday and most likely a shop is open, at least to get a tire and maybe extra rim.