windows 7 - Is there a way to "disconnect" a mapped network drive, but NOT remove the mapping?

For example, when I type net use I might see something like:

Status        Local       Remote
OK            H:          \\server\home folders\me
Unavailable   I:          \\serverA\share1
Disconnected  J:          \\serverB\share2
Reconnecting  K:          \\serverC\share3

When this happens, Windows Explorer has 10 - 20 second delays when doing something as simple as creating a new folder on my C: drive. After a while, the K: drive will change to say "Disconnected".

What I want to do is somehow force the K: drive to be Disconnected or Unavailable, but without losing the authenticated mapping.