MSPaint to the rescue.
adapters-mspaint.jpg
All injectors can rotate while clipped in, if that would cause a leak we'd all be dead because everything with port injection would have killed everybody with fire. I suspect yours leaked because there was something not right with it.
The problem with rotating the stock LSA injectors in the LSA manifold is that the injectors are trapped in that annoyingly-small little pocket and the connector will hit aluminum before the spray can get around to a clear area of the port.