However, with that anger, I doubt Qui-Gon would have taken him. Sensing the anger, would give him indefinite doubts, about the future in Ani's hands. Wald being Greedo is definitely false, as Temuera being Kitser. I think Kitser will be back as Anakin will return to Tatooine. I even think Kitser might fight along Anakin in the Clone Wars.
Yes, its likely that Anakin will free ALL the slaves, not just his mother, as thats what he said in his dream, so Kitser is likely to return and join Anakin.
In the novel for TPM the fight scene between Anakin and the rodian boy (who I think is meant to be a different character to Wald) occurs and afterwards Qui-Gon just explains to Anakin how he must ignore frustration and learn control. He doesn't seem bothered by Anakin's anger. He seems rather naive to me.