Sure it "can", but it is not certified for aerobatics.
The EC135 rotorsystem is very similar to the Bo105. However the bearingless rotor is not designed for "unusual" loads. Theoreticaly it can do most of the stuff, the Bo can, as well.
You can prove it quite easily. Just try it in the sim. The Aerodynamics and mechanics and so on are completely SIMULATED. There is no fake in there. There might or might not be minor differences in feeling or handling but the general simulation is very good and reflects what a real higeless rotorsystem does.
(Just like our R22 reflects a tethering rotor very well)