Lets say you have a library that licenses with GPL v3. You have two pieces of code, one of them is your "loader" and the other is your real "code".
So your "loader" makes a request to a server, and the server gives it a string of the real "code". The "loader" then runs the real "code". You are never given a binary version of the real "code", but you are given both binary and source code of the "loader".
From a technical/legal standpoint, is it legal to not release the source code of the real "code" since you aren't given a binary version of it and it is being dynamically loaded later on by the "loader" (which you have full source to).