The problem with people roleplaying their characters intensely after all.
Serrano has always had a workplace agreement with all previous covenants ,
it is the same method his master still follows.
This would have been his first opportunity to be a full member at a covenant.
He is outrageously attacked for a fault in his latin and merely speaking aloud.
Illegal certamen or not (being forced into probationary member status , no matter how temporary) ,
his enjoyment of starting at a new covenant (of his own) is irrevocably tainted.
He was originally greatly offended at someone claiming to abhor violence being perpetrated on others ,
extremely willing to use those tactics for what appears to be a fairly trivial matter.
When he witnessed the transformation of the teeny-tiny kestrel into Amos ,
the whole situation was seen as "small-man syndrome" and could be laughed off.
Until Amos spoke that is.
No way will Serrano live or deal with someone who lies so outrageously , while trying to make it appear the fault is with Serrano.
As Amos is unlikely to be given a serious verbal smackdown by Jaime (afaik , anyway) ,
and the fellow magi (one so far) are acting exactly as his master warned him about ,
Serrano is confirmed in his original intention to leave.
There would need to be a provision placed in the charter about magi behavior to each other ,
though i don't think you can do anything about certamen , except bring charges at tribunal ,
if you are continually subject to unwarranted ones.
Amos is being well-played , i could not do half as well if i tried playing such a character.