I just got conformation ... it would be much easier for me, if i could explain this in german ^^ but i will try ...
It does work ...partly.
Clockspinning will indeed remove to Counters at once. If you cast two of them it will transform .
Vampire Hexmage will remove all Counters immediately, but it will not transform TitI at this Point. But as soon as you cast an Instant or sorcery spell once there are no ice-counters left on it, it will transform !
With all that in mind, i think your deck is fun, playable and very competitive ( in my opinion )