sockets stuck in use

[Jim]

I was working on an application I've been developing, and I closed the
last instance a bit over 12 hours ago, but some of the sockets are
still stuck in use:
[sjss at elrond ~/dev/pipe/scripts]$ netstat | grep -e 'tcp' | grep 9612
tcp4       0      0 192.168.1.80.42464     192.168.1.2.9612       SYN_SENT
tcp4       0      0 192.168.1.80.35742     192.168.1.2.9612       CLOSED
tcp4       0      0 192.168.1.80.46116     192.168.1.2.9612       CLOSED
tcp4       0      0 192.168.1.80.36792     192.168.1.2.9612       CLOSED


Is there any way to get rid of them without restarting the machine? I
was playing with sockopt SO_KEEPALIVE and SO_LINGER when I caused this
issue..

Thanks,
-Jim Stapleton