Hi Tony,
for RW Paint (and also for future versions of other RW apps), the resetting can be done by pressing and holding left shift and ctrl while launching the application.
The reason why Paint has a lasso and Photos does not, is because this tool was created after RWPhotos was released. The next version is going to get all the relevant additions from Paint and more. I guess I can make a pre-beta version for you, if you would like to work with it.