Honest answer - time will tell. Just like with water damage, a working device when removed from danger is not necessarily going to be a working device in a months time.
Is it possible it's fine? Sure it is.
Is it possible the extreme heat has melted some vital glue somewhere that's decreasing it's IP67 (or whatever rating it has), allowing something to move a tad when it shouldn't, or even altered the chemical balance of the battery? Yup - that also.
No one here can tell you a yes/no answer. Time will though.