Worked E21EJC, heard DX including S21 faintly on Space Station

Pass of space station was from North North West to South East, with maximum elevation of 40 degrees in my region, at around 5.15 pm. Kept my Moxon Yagi pointed North East to get maximum out of the pass. Initially I heard some foreign accent stations, which could be from the neighbouring country. Later I could hear S21 faintly, but not the suffix. Just gave call for S21, could not get the reply. After some time, I went outside to rotate the antenna towards East to catch the second half of the pass. To my surprise, I found that wind had already rotated my antenna in that direction. I could hear E21EJC clearly several times and establish contact. Later I heard VU2ADV also working him. Then I could also work VU2ADV. Now I can understand that wind loading is a real factor with light antennas mounted lightly. I had noted that whatever the direction I keep the antenna, some time later, it is pointing South on most occasions. Towards the end of the pass I could also hear the NA1SS beacon in Morse Code faintly. Here is the pass recording after removing the unclear initial part and terminal part.