Here's the view of my car's innards after removing the MCU & Air Guide:



Despite the enlarged access, the TVS is still not removable because its mounting screws' heads are oriented to the right side of the throttle body. So the throttle must come out.

Get some masking tape to make labels identifying the four vacuum lines that are connected to the throttle body at various points. If you’re lucky, all these lines might still be connected. The diagram in service manual document 07.3-013 "Function Diagram CIS-E Injection System" would be handy to have in understanding where these lines go. Disconnect and label each vacuum line as you see fit.

With your needle-nose pliers, grasp the top loop of the spring leading down to the throttle and extend it a bit to clear its hook. Once relaxed, lower the spring a bit to clear its bottom hook and remove the spring and set it aside.

Disconnect the upper socket from the downlink rod. Let the rod rest where it is.