Is my clam pinching?

[shy07guy]

I have had this clam since last sunday and it was been doing well I think except the passed two days it has looked like this on the left side. Is it pinching and if it is what should I do? The clam has never had the slit on the left gap but now it does not seem to be open at all is this ok also or is my clam in trouble? My tank parameters are all in check I did them 2 days ago. The only swing my tank really has is in temp going from 79.7 to 82.6 during the day. My corals and fish all look good including my montipora. I have had some recent problems with something that was causeing my coraline to bleach and die. Here is that thread incease they are related. I am not sure if I am over reacting or not but I love this clam and want it to be healthy.
Thanks
Derek
Here is the link to the bleaching coraline
http://reefcentral.com/forums/showthread.php?s=&threadid=382449

Here is a link to previous pics of my clam to compare. (since these shots were taken I have fliped the clam over and moved him closer to the rocks where he is now)
http://reefcentral.com/forums/showthread.php?s=&threadid=380159

Here is a pic of the clam taken today

[shy07guy]

any ideas?

[shy07guy]

bump

[BKtomodachi]

It looks good to me. Its a maxi, right? In the first pic it looks a little to far open, actually.

[shy07guy]

:) oh good! He still looks the same as he did when I took the last pic so I will assume for now he is happy. Yeah it is a maxi Thanks for the help
Derek