Fact 1: [KBS Music Bank fan account] Eunhyuk and Donghae left in one car. Eunhyuk sat behind Donghae. They stretched their heads out together and waved to fans. Leeteuk came out from another car, he popped up form the van's rooftop.

So, they left together.

Fact 2: @special1004: White christmas!!!! Now coming white snow!!!^^It’s Ilsan here but the snow is accumulating crazily!!! pic.twitter.com/BnINmBdD

So, Leeteuk was at Ilsan.

Fact 3: @siwon407: Omg.. white christmas coming.. Happy christmas my beloved everyone! #nowplaying, Eddie Higgins Trio-jingle bells.

Santa claus is coming to town ! lovely ! pic.twitter.com/Xv3KjTux

Fact 4: Ryeowook and Sungmin at Sukira (I think)

Fact 5: Shindong at ShimShim Tapa (I think)

Fact 6: Fans took pictures of Hyuk topless at dorm Pic 1 Pic 2

Assuming from the 6 facts above are true, we can conclude that Kyuhyun, Siwon and Yesung are outside playing with snow, Ryeowook, Sungmin and Shindong are working, Leeteuk is at Ilsan and Eunhyuk is topless in the dorm.  But where is Donghae?? According to the facts, all members are out except our topless Hyukjae and presumming from the fan account that Eunhae had left together in 1 car, we might presume that they are somehow at one place together which there is only one possible place ..the dorm.(since our beloved topless guy was spotted there)

Kya..I am not going to conclude this and I am just gonna leave this to your imaginations..XP