They won't charge you, but they definitely can yank them back if they want to.
So what did they say exactly?
"I would first like to take this opportunity to personally
thank you for choosing Chase to handle your Sapphire
account.
I would like to inform you that we have noticed
more than 100,000 points were added to your account.
Hence, we will be adjusting the extra points which were
added to your account, please allow three to five business
days for this adjustment to take effect.
Your satisfaction is important to us, and we remain
committed to providing you with superior value and
service. If you have any further questions, please reply
using the Secure Message Center.
Thank you,
Raju Sharma
E-mail Customer Service Advisor