In what specific ways does the family’s decision to "get rid" of the insect affect Gregor?

Gregor's sister, Grete, is the first character to insist
that Gregor must be removed. One day, she plays for paying lodgers at their home, and
Gregor comes forward, drawn by the music. The patrons see him and indignantly declare
that they will not pay for their stay, so Grete decides the family should rid themselves
of the insect. She states that if it was, indeed, Gregor, he would not punish them by
driving away their paying clientele. She suggests that because he is inflicting this
upon them, he must not be Gregor any longer. Gregor takes this to heart, returns to his
room, and dies in the morning. This has a bolstering effect on the family, as they evict
the lodgers and start to see things from a brighter viewpoint, perhaps indicating that
the state of their son had left a dark stain on their outlook.