V8 Vantage Battery Removal

[bobcanada]

I'm trying to replace the battery on my 07 V8V. However, I can't figure out how to remove the two clamps at the base of the battery. I've removed all four torx screws and yet the battery won't come loose. It seems that the clamps slide sideways but there is not enough clearance to a trim panel to slide the clamps all the way out.

Any suggestions?