When destroying an application on openshift, you'd have to indicate the cartridge that was used to create the application:

https://github.com/openshift/os-client-tools/blob/master/express/doc/API states for application control:

Submit JSON String:
{
    ...
    'cartridge': 'framework-type, e.g. php-5.3 - Valid types determined from /broker/cartlist with cart_type of standalone',
    ...
}

"cartridge" is required in every application control request. This information may be requested by listing all applications (request user info). This information is already present on the server, there should be no need to provide this "redundant" information. I already talked to the openshift team about this and they agreed upon correcting this in a future release.
The purpose of this issue is to track the progress on the server side.