[galaxy-dev] dynamically load and run R scripts

Hi guys, I was searching for a possiblity to dynamically load and run R scripts and I found http://dev.list.galaxyproject.org/dynamic-loading-of-tools-tt4138600.html I know that it might be a security issue, but we only have a local instance here. Optimally an R script can be loaded into the history. Subsequently, this script can be execute via "tool" that takes this script and some parameters and returns the result. Is anything like that out there? Could anyone give me a reference? Thanks a lot, Jens