I think thats why they dithered for some time about the raid. Several members of Obamas cabinet pushed for a missile or drone strike on the compound, and he refused for several good reasons. They weren't 100% certain that it was Bin Laden in the house. A drone strike on a residential area in a relatively affluent city, near a major military base, would have caused absolute fucking uproar in Pakistan, and there were many Pakistan civilian casualties particularly if it turned wasn't Bin Laden in the house. Secondly with a drone/missile strike they'd never conclusively know that they got Bin Laden, Pakistan military would have locked down the compound in the aftermath, and I suspect if the US had gone down the missile route and then turned up the next day and asked the the Pakistan government if they check the DNA of the victims to see if any of them were Bin Laden, they'd have been told to fuck off.
So they went with the assault team.
Which is why I don't believe the whole casually dumping the body in the Hindi Kush part of the story. Every part of the raid was meticulously planned. I don't believe they'd have gone in the the compound without a solid definitive plan of what precisely they'd do with Bin Laden's body (or if somehow they'd taken him alive). Taking the body with them, and then deciding to chuck it out the door half way home doesn't make a lick of sense.