[K0balt]

It will come down with exactly the energy we put into it minus the energy it already lost in orbital degradation.

But the energy we put in was with an efficiency below 25 percent (I would guess) so the energy it will release will be equal to a fraction of the energy we put in plus the energy released from oxidizing whatever burns on the way down. But still probably less than it already had put into it.

TLDR inconsequential effects. Not enough mass to matter. 5200 tons of space rock falls on earth every year.