I was transferring my california common from the primary to the secondary. I was at the very end of transferring and stopped the syphon with my thumb to see how much was left in the primary. After determining I was done I went to put what was in the syphon into the secondary. My thumb got stuck half way off and I turned the tube into a high pressure sprayer sending the remaining beer in the tube straight into the secondary. I have heard it is really bad to make oxygen in the beer at this stage of its life. I tried to pop all the bubbles but I am afraid the damage may have been done. What do you think?