Chase and Cameron rush in with the MRI. They just found an arterial venous malformation in Giles's spine: that's what was causing the paralysis, not ALS. It didn't show up on any of the previous MRIs because the scar tissue around it blocked it from sight. House's steroids shrank the scar tissue down, making the AVM visible and winning it the Hide and Seek MVP trophy. All they have to do now is remove the AVM and Giles will walk again, not to mention learn a valuable lesson about the importance of seeking a second opinion. Foreman gives House a loving smile. He's not going anywhere.
And now it's time for a cheesy surgery/healing/physical therapy montage, all set to jazz music!
House pops a Vicodin on his way out of work for the day. He's so obsessed with that job that it's still daylight when he leaves. Giles exits a nearby elevator with the help of his shiny new cane. He's being discharged today, and his limp is the only reminder of those two years of unnecessary paralysis. House bets Giles fifty bucks House can race him to the curb. Louis Armstrong comes on the soundtrack as Giles gives House a little present: his trumpet. House is touched, because he doesn't know that Giles dropped it on the floor in the beginning of the episode. Giles's one condition is that House never play it. House smiles. Giles asks how many Vicodins he takes a day, and House's smile fades. "I'm in pain," House answers. "Yeah...aren't we all?" asks Giles. The two limp out of the hospital and talk about the best cane stores. Foreman walks past and House says he'll be seeing "Eric" tomorrow. Dude, I can't believe they didn't bring Brandy back.