After trying to remove a very broken Hello World App:

/etc/apt/sources.list.d # apt-get remove hello-world-app
Reading package lists... Done
Building dependency tree... Done
The following packages will be REMOVED:
  hello-world-app
0 upgraded, 0 newly installed, 1 to remove and 7 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 246kB disk space will be freed.
Do you want to continue [Y/n]? y
dpkg: error processing hello-world-app (--remove):
 Package is in a very bad inconsistent state - you should
 reinstall it before attempting a removal.
Errors were encountered while processing:
 hello-world-app
E: Sub-process /usr/bin/dpkg returned an error code (1)


... I attempted to reinstall as suggested with these results:

/etc/apt/sources.list.d # apt-get install hello-world-app
Reading package lists... Done
Building dependency tree... Done
hello-world-app is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
1 not fully installed or removed.
Need to get 0B/21.2kB of archives.
After unpacking 0B of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  hello-world-app
Install these packages without verification [y/N]? y
Selecting previously deselected package hello-world-app.
(Reading database ... 17097 files and directories currently installed.)
Preparing to replace hello-world-app 0.7 (using .../hello-world-app_0.7_armel.deb) ...
Unpacking replacement hello-world-app ...
/var/lib/dpkg/info/hello-world-app.postrm: line 11: syntax error: "(" unexpected
dpkg: warning - old post-removal script returned error exit status 2
dpkg - trying script from the new package instead ...
/var/lib/dpkg/tmp.ci/postrm: line 11: syntax error: "(" unexpected
dpkg: error processing /var/cache/apt/archives/hello-world-app_0.7_armel.deb (--unpack):
 subprocess new post-removal script returned error exit status 2
/var/lib/dpkg/tmp.ci/postrm: line 11: syntax error: "(" unexpected
dpkg: error while cleaning up:
 subprocess post-removal script returned error exit status 2
Errors were encountered while processing:
 /var/cache/apt/archives/hello-world-app_0.7_armel.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)