Just to be clear, Sorcery Adept level says (among other things):
ADEPT. If failing to use a power the sorcerer may try again, this time rolling against his or her Total Corruption value.
--> So, simply put, if the Sorcerer has a Total Corruption of 4, he can roll again and, if rolling 4 or less, he/she succesfully casts the spell.
And for Master level:
MASTER. Each time the sorcerer attempts to affect the Resolute attribute of another creature, he or she may choose to roll against the creature’s Shadow instead (the creatures Resolute-Total Corruption).
--> Again, an example: The Sorcerer casts Bend Will (Core Book p.132) against a Cult Leader (Core Book p.211). The Cult Leader has a Resolute of 10 (0) and a Corruption of 4.
As the spell requires a [Resolute <- Resolute] test to succeed, the caster can choose between rolling his own Resolute <- 0 (the Cult Leader's Resolute Attribute Modifier) or Resolute <- +4 (the Cult Leader's Resolute Attribute - Corruptio =6, which corresponds to a +4 modifier for the player)
Are both examples right?