[cyberjoek]

This is all IMO:

The rule that establishes this is rule G20:
<G20>ROBOTS/HOSTBOTS may not contact their own TOWERS above the DEPLOYMENT LINE.
Violation: PENALTY for contact. TOWER is disabled if MINIBOT is DEPLOYED above the DEPLOYMENT LINE.

And just so we're clear:
DEPLOYMENT – the act of positioning a MINIBOT on a TOWER. DEPLOYMENT starts when the MINIBOT breaks the vertical projection of the TOWER BASE circumference during the END GAME. (Related form, DEPLOY, verb)

The definition of Deployment/Deploy/Deployed seems to indicate it is the whole action which would include the whole bot.

By my reading if any part of your Minibot is above the line during the act of positioning a MINIBOT on a TOWER you've just DEPLOYED above the DEPLOYMENT LINE. That means if you're above the line during the DEPLOYMENT you're the proud owner of an ex-tower.