Deflated GBTA + gaping mouth = ?

[TheAngelfish]

Hi, my GBTA has a gaping mouth and is deflated, this happen after i turn of my pumps to feed my scooter blenny. The gaping mouth happen before it deflated.
What it looked like yesterday

What it looks like today

 

[Amoo]

http://www.reefcentral.com/forums/showthread.php?t=2271385