As the blob withdraws, the glass globe "uncloaks" to reveal the spacepod inside. As it positions itself close to the glass, the "force field" is activated, which will solidify into the metal ring in the next sequence. As the pod stops, the door opens and Ziggy will emerge and "abseil" down out of shot. That bit is still to be added. The follow on from there is still to be done, but will include some of the FX I have put up on my page here. Its quite a complex sequence.