Fabergé Egg of Death

Or

Fabergé Egg of Destiny

Fabergé Egg of Destruction

Fabergé Egg of Extinction

Whatever.

I'd given up on the film by that point but how did Mark W disable it?

Just by removing it from the 'bomb'?

It wasn't clear to me how it worked anyway.

Apologies if this is blindingly obvious to everyone else.