Disable Data Flow Components (Alternatives)

I'm aware there are already a few threads about disabling data flow components (how you can't) and alternatives, or why you shouldn't want to.

I'm trying to make it easy to switch between a development and live environment, where the development set-up would pull some lookup data from flat files, whereas the live set-up would replace those flat file data sources with OLE DB data sources (this is in part because I might want to work on the package away from our network and can't connect to our database).

Is there a straightforward way of doing this? Even when the OLE DB data sources aren't part of a data flow they will cause the whole package to fail.

Thanks very much!

Using VS 2008 Version 9.0.30729.4462 QFE