Heroku Garden - reversing or changing a 'generate scaffold' command

In Heroku Garden, is there a way of reversing or changing a 'generate scaffold' command? I often find I need to make changes to the scaffolded application but I do not know how to.

'script/destroy scaffold Modelname' from the console doesn't seem to work. For example, I generated a Product scaffold in Heroku Garden. When I try to destroy it using the console, I get the following error:

script/destroy scaffold Product SyntaxError: compile error /home/heroku_rack/lib/init.rb:1: syntax error, unexpected tIDENTIFIER, expecting kDO or '{' or '(' script/destroy scaffold Product ^

Does anyone have any ideas on this? (I'm a Rails/OO newbie)?

Many thanks