Yes fairly alright so far, they are gathering as many eye witness testimony as possible of the events before the building was set on fire. So far Itar's accounting of the story is right there were not two demonstrations that accidentally came across each other as reported by some media outlets but a march through Odessa aimed at affirming the Ukrainian character of the city that turned crazy as a number of participants of that march decided to raid a near by urban camp site style political meeting looking to inform and recruit support for a federalism project of Ukraine.
On the Transnistria presence at the camp, it is at an early stage of information gathering but the region suffers from isolation and is looking forward a solution and among these there is an interest to explore the possibility for Transnistria to join a Ukraine confederation( Switzerland style) or federation should the project to offer guarantees to the Russian speaking communities protecting their economic interests as well as culture and linguistic rights. After Crimea joining the Russian Federation, there is a pessimistic mood that such a possibility for the region is possible given the consequences, joining a Russian culture economic zone of Ukraine appeared to be the next best opportunity to break the isolation and share the experience they had of leaving within an hostile framework.