Sonderland expressed an opinion in his first testimony. That neither clears nor supports quid pro quo, what matters is whether the facts he presents do or don't. He revised his testimony probably because he was fearful of the consequences of lying under oath.
The whole quid pro quo thing is also a bit of Red Herring since asking a foreign power to investigate a political rival is corrupt without it. It has also spectacularly backfired since all the evidence we've seen so far has backup that a quid pro quo did take place, which only makes it worse.
Caption this Meme
