Jai Shree Krishna to Vallabh Na Vhala Vaishnav,
I have never heard that we should not speak or spell our Shri Gurudev's name.
At every holy Prasang like Mala Paheramani, Dhadhi-Lila, Tapeli Manorath, Hindora and many more we are loudly utter "JAI" of Shree Thakorji, Our ladila Vallabhprabhu, Gusainji and our Shri Gurudev.
Even at the end of Bhagvat Varta and Nitya Niyam before going for sleep we are proudly says that "Amara Gurudev Shri Dwarkeshlal Pyare ki Jay, Aapnu pragatya Jeth sud Bij, Apna Sevya Swarup Shri Dwarikadhishprabhu ki Jay" and this quate is repeated by each member of family and Bhagavadiya Vaishnav present there in Bhagvat Varta.
Though we are considering our gurudev as our PRANPATI it is our basic responsibility to say heartly "JAI" of them.
For HareshBhai Poshiya, I remember that my younger sister was ride on camel before few years. When my she had asked to Dwarkeshbawa about that, Dwarkeshbawa had given her Agya to take Brahma-Sambandh Diksha again with the Gurudev as previous and she had.
It basically depends on Shri Gurudev's Agya and Wish. So please conform with your Gurudev before doing anything.
Shree Vallabhadhish ki Jai,
Jai shree Krishna
Mr. Arvind Ravjibhai Chovatia
Unit-6 128, Bowen Street,
Spring Hill, Brisbane
Mob No: 0061-448 401 631