Brake Booster Line

[Midgear]

Is this the brake booster line? (Marked in red)

http://memimage.cardomain.net/member_images/4/web/2416000-2416999/2416601_11_full.jpg

http://memimage.cardomain.net/member_images/4/web/2416000-2416999/2416601_12_full.jpg

http://memimage.cardomain.net/member_images/4/web/2416000-2416999/2416601_13_full.jpg

and does anyone elses wires and hoses look this clumped together near the throttle body? lol

Will it hurt if this hose is disconnected while the engine is running?