Conversation so far:
What politics was Sri into?
This sparked an outburst of public anger against the British, leading to civil unrest and a nationalist campaign by groups of revolutionaries, who included Aurobindo.
What other revolutionaries got involved?
In 1908, Khudiram Bose and Prafulla Chaki attempted to kill Magistrate Kingsford, a judge known for handing down particularly severe sentences against nationalists.
What stopped them?
However, the bomb thrown at his horse carriage missed its target and instead landed in another carriage and killed two British women.
Did they get caught immediately?
Aurobindo was also arrested on charges of planning and overseeing the attack and imprisoned in solitary confinement in Alipore Jail.
What happened to the two guys who threw the bomb?
The trial of the Alipore Bomb Case lasted for a year, but eventually he was acquitted on May 6, 1909.
His defence counsel was Chittaranjan Das.

Question: Why did Sri convert from politics to Spirituality?
Self-contained rewrite: Why did Sri Aurobindo convert from politics to Spirituality?