Yes it is possible to kill an android. He was on a ship that exploded so there will be no parts to salvage, but he did copy his memories to B4 (a previous prototype with a very primitive positronic brain and was dismantled by Dr.Soong who went on to build Lore and later, Data).
I would love to see a movie with Lore in it. He was super badass. But since Brent Spiner has no plans on reviving any of his android roles, it is highly unlikely it will ever happen.
