Yes, it does, and that's one way. Another is to use the "Machine" device. For example "Machine.remove(15);" will remove the shred with id 15 (see chuck --status for id numbers). Note that that spork operations will return the id of the new shred as a int.

Also possible;
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//create a shred reference with a name
Shred my_shred;

//assign a bit of running code to it
spork ~ my_fun() @=> my_shred;

//other stuff happens
5::minute => now;

//this is really quite readable compared to other options.
my_shred.exit();