No banduras, but when the Ukrainian Orthodox Church split from Moscow in 1921, they instituted the practice of serving panakhydas in honour of Shevchenko and before his portrait which was carried in procession.
Any Orthodox priest who wished to join the autocephalous movement at that time simply joined in one of those panakhydas to show his solidarity etc.
The issue of canonizing Shevchenko as an Orthodox saint came up numerous times in Ukrainian church history, as did the canonization of the Orthodox Hetmans Bohdan Khmelnitsky and Bayda Vyshnevetsky (for their defence of Orthodoxy).
The later Princes Constantine and Alexander Ostrozhky were great supporters of Orthodoxy against the Union, and when the issue of their possible canonization by the Orthodox Church came up, RC enemies came to the Kyiv Caves Lavra, had their bodies exhumed and burned them - believing the Orthodox Church would not canonize anyone without their extant relics.
The Georgian Orthodox Church canonized their "Shevchenko" in the person of St Ilia Gavgavadze who was shot by the Russian tsarist secret police in 1907.
I see nothing wrong with the canonization of Shevchenko as an Orthodox saint, I honour his memory at home as I would any saint.
And the bandura, far from being simply a cultural musical item, was used by wandering "kobzars" (like our Andrij here!) to play their songs to their oppressed people, to keep their hopes alive and their faith in God and in a better future alive.
Consider this an addendum to your Orthodox studies!