I've installed iShowU, allowed it to install Soundflower, then 
recording something: no increase in memory consumption on Remote 
Buddy's side. 
I went on, restarted Remote Buddy, and started another recording: 
again, no increase in memory consumption.

Do you have any Input Manager's installed by any chance?

Could you copy and paste both the output of a click on "Analyze" in 
Activity Monitor when in the information window for Remote Buddy's 
process and the contents of "Opened files and ports" in the same window?

That should help to see, if any external code merged into Remote 
Buddy via the InputManager mechanism.

Remote Buddy should just idle on your system as long as you don't use 
it. Thus I don't see how it could consume any additional memory (and 
that much, too) while it is not used.

Best regards, 
Felix