As long as the data is intact (whether it's private key or signed transaction), theoretically you could regain access to your coin.
I was thinking more of scenario where the chip thinks you are dead when you are not, and then broadcasts a transaction which moves all your coins to someone else's address.
I see. In that case, there's nothing much we could do unless there's some delay between the chip detecting you're dead and broadcast the transaction where you need authentication to cancel it. Although such mechanism have security trade-off.