Any way to remove a clam from a rock?

[pinkneyss]

My new BTA decided to move right next to my Crocea & I need to move one or the other. The clam is on the top of the rock & the BTA is on the bottom but when it opens up it touches the clam. Is there any way to get the clam off the rock?

 

[mbbuna]

gently tip the clam to one side then cut the byssal threads as far away from the clam as you can