Two lanes and traffic jams

Hello forum, I hope I have chosen the right forum for my topic… The following situation (it’s been a while), so we’re going back to the summer 08 again, played off on the Arlberger expressway (in the direction of Arlbergpass). Shortly after Bludenz-Bings we’re going up the mountain for a short 2-track. There the traffic stopped due to a construction site at the end of the 2-track extended route (according to traffic news on the radio 10-15 km ??? and over one hour waiting time) It started g not forward. Anyway I arrived there and when I was there where it becomes 2-track, I see that all vehicles were on the right lane in the traffic jam and not a single car used the left. There was also nowhere a sign that the left lane is locked or you are not allowed to use it. Anyway I put the turn signal out and on the left past the traffic jam (I was the first, a second and a third vehicle made it after me) Only some drivers of my project were practicing My thought was after a while “I’m allowed to drive around” so again turn signals out and also past the blockers of the left track. Then I experienced something that I have never experienced before. I or my car was spat at, insulted, skunked by the people standing on the right track. I went up to the construction site and put myself there and had to laugh at what had just happened. What do you say to the incident, would you have acted exactly like me or would you have ranked yourself well like the others on the right ? Bzw. how does this look legally, was my behavior ok or not ? I can use both tracks in traffic jams, drive forward and then place them in the zipper !?