Right. Could be that. The probe that brought back comet tail material is showing materials that took considerable heat to form. Mineralization, which might indicate a degree of planetization. An exploding planet seems overly melodramatic.
Nothing wrong with the exploding planet hypothesis other than the fact it would take the energy output the Sun generates for about 20 hours to explode a planet the size of the Earth and prevent it gravitationally reforming, and there is no known mechanizm in a planet that can do that.
Not to mention there is not enough material. LOL!