Good question, as now it seems that you are being double penalized. In some of the 3v3 games, it is common for my team to take on a firebase, and reconfigure it as needed to produce units or supplies, or even recycle it completely to allow a teammate to build there.
I understand the half-rate of return penalty (so people cannot build quickly to rush and then recycle to build even faster, but this was really only an issue with the hog rush/tech), and I understand that a lot of people will recycle when defeat is inevitable in order to end the game quicker (or to grief a bit and not allow the would-be-winner the points), but the TU3, as it states now, completely neglects that there are times when you just want to change a strategy to adapt, so why should the enemy team be given points if they aren't even attacking? It really should be either or, or it should have certain parameters implace, such as if the building is taking damage and is recycled, then the points are given to the attacker (much like how units in an autoheal area cannot be healed while taking damage.
This needs to be clarified.