Removing glass baffle in an operational sump

[hqgc]

Hello everybody,
I am trying to remove one of my baffles in my sump. The sump and tank are up and currently running. I have tried cutting the silicone with an "Olfa" knife but cannot get the thing to budge!
I was wondering if it is an option to break the glass and then remove it that way. I am concerned about getting broken glass into the system ( pumps,etc.)
Any other ideas?
Thanks