Of course they did. How do you condense all that stuff from probably years of comics in a single movie? They'd have needed a whole series of films about Wolverine's past.
oh come on, seriously they could, it ain't hard to pull, you just need to do the pacing right.. that's a good build up to his character and adds more depth to the story, instead of just
"hey logan, i wanna do you adamantium, you wanna?"
"oh yes i wanna wanna stryker",
and multiple times of screaming facing to the sky with the camera pulling away doesn't give characterization..