Not able to kill a task using kill -9
# ps aux|grep subl
root 3018 2.2 1.0 289008
61872 ? Ds 12:30 5:27 /opt/sublime_text/sublime_text
The
D
in the STAT column means it's in an in "Uninterruptible sleep". That usually translates to something waiting for an IO command. These cannot be interrupted by kill.
You might be able to jimmy it back to life by unmounting your SSHFS mount.