There weren't any "ties" with Russia to begin with. (Nor with China, even though Jolla also has some Chinese investors). What I remember is that Russia wanted an alternative to Android OS and ios. Samsung and Jolla pitched their Tizen OS and Sailfish OS respectively to the Russian government. Russia decided to go with Sailfish as Jolla was willing to license the whole source code and be more flexible with its term (partly out of desperation as it needed investment). Then some Russian company started the OMP (
https://tadviser.com/index.php/Company:Open_Mobile_Platform_... ) which licensed Sailfish OS to fork it and develop it as
Aurora OS. OMP also committed to contribute code back to Sailfish OS, and aid its continuous development (75% of Sailfish OS is open source so they anyway would have to release the source). This company also invested in, and bought around 10% share of Sailfish holding (Hongkong) one of the investment vehicle created by Jolla. That Russian company then sold 75% of its share to Rostelecom, another Russian corporate (the Russian government owns 45% of the Rostelecom). Rostelecom also acquired 75% share of OMP, which it later increased to 99.9%.
So technically, Russia's official mobile OS is a clone of Sailfish OS it rebranded as Aurora OS that is owned by OMP, a Russian company, and not Jolla.
Also, after Russia invaded Ukraine, Jolla investors have been trying to cleverly use the anti-russian sentiments to its advantage by trying to convince european investors to buy the shares of Rostelecom. Source (in Finnish): https://www.linkedin.com/posts/samulisimojoki_putinin-hy%C3%... .