Once you have wrestled the hose out from under the boot, you can remove the boot from the secondary throttle.
The large hose clamp at this end will not be used (although I think fully closed it will JUST make it); however the air mass meter side clamp is re-used, so don't loose that one!
Next. take your 5mm allen wrench and remove the two allen head bolts on the front and rear sides of the secondary throttle body:
You will need the 1 inch extension to get the rear one:
Then the secondary throttle comes off easily:
Now remove the rubber gasket ring:
(continued)