I would not have felt qualified to determine whether it was flyable or
not, so I probably would not have flown it without getting an opinion
and a ferry permit from an A&P (and I am not above making the A&P fly
with me). My main concerns would be weakened attach points and possibly
some sort of flutter induced by disrupted airflow over the aileron.

That is exactly how I felt (although I was less concerned with the
permit itself). I was getting lots of advice but it felt good to have
an A&P come out and give me his opinion. It would have been nice to get
the opinion of an aerospace engineer but I wasn't going to hold my
breath for that. I did have the A&P come with me on the test flight
after the repair before I put the family in the plane. My main concern
had also been flutter resulting from the uneven surface.
My broker seems to believe that it would be very unlikely that this
will effect my rates in the future. I"m hoping that they are able to
collect from the truck's Mexican liability policy too. BTW: I wonder
how often people drop their plane off for annual and the mechanic
borrows parts off it to retrieve another plane without the owner ever
knowing.

-Robert