It's such a shame that a debate is even necessary.
The FIA should police the rules - and that should be the end of it.
I agree completely. The FIA should have been clarifying these rules early in winter testing to avoid such a situation.
---- WARNING, The following section is ENTIRELY CONJECTURE----
While I hate to be a conspiracy theorist but I think the origin of this dilemna can be traced back to the non FOTA powers in F1.
Bernie has a financial interest to see close racing and Championships that come down to the wire. In the last few years the title chase has come down to the final GP (I think Alonso had to score one point to gain the championship in Interlagos'06, but I could be wrong). Bernie loves this, it lines his pockets.
I think he wants to have an ace in the hole, in this case having parts ruled illegal to restores some type of competitive balance. The result is a longer title chase. Now there would have to be some dubious plot between Bernie and Max to orchastrate such a plan, however I think its possible. Think back to '06, why was Renault able to openly run their mass damper system only to have it deemed illegal after half of the GPs had been run? It just doesn't make sence.
Now I am not saying that this is something that regularly happens, or that F1 is fixed. I just think that some of the ambiguity and inconsistancies in how parts are deemed legal, and illegal can be used to benifit certain interests. And when those interested parties see an opertunity as a result of vauge rules they can use their weight to "make things happen" at just the precise moment.
“It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so" - Mark Twain