computer analysis going berserk?

http://en.lichess.org/ogWwwLZd

at the last move, the analysis gives
'Checkmate is now unavoidable. The best move was Kd1.'
which is indeed the only way to avoid mate in 1.
but then in the line given the computer sacs rook and queen for no reason?

(37. Kd1 Qh8 38. R3g2 Rxg2 39. Rxg2 Rxg2 40. Qg4 Rxg4 41. fxg4 Nf6 42. Kc2 Qxh6 43. Kb3 Qh3 44. Kc4 Nxg4 45. Kc3 Nf2 46. Kd2 Qxd3+)

Well, white's going to get mated fairly soon anyway. The line includes moves giving away the material because it has to in order to delay mate.