How to override functions outside function.php and cancel Social's custom components


I am using the social theme and trying to narrow down some of the default functionality the theme & Buddypress itself gives (like RSS and Social's custom components ).

1. Is there a way of canceling Social Custom components from the theme's settings? If not, how would you recommend to do so? Is there a clean way to do that with a child theme?

2. I need to override PHP functions that aren't wrapped with if (! ( function_exists('<FuncName>') ) ) - for example: functions in <ThemeDir>/_inc/functions/bp-component-functions.php.
Is there a recommended way of overriding these functions in a child theme? Will it be possible to wrap theme with function_exists() in the next theme release?