The aftermath is not that of a JDAM, nobody disputes this. So yes, it must be bullshit, since the damage caused there is not consistent with what a JDAM can do.
Discussion
here is 500lb bombs which look similar https://www.youtube.com/watch?v=ZHPa0upQdRQ
similar sound tiny crater https://www.youtube.com/watch?v=2GlBgENrOgY&t=60
the sound is something faster than the pali rockets and moving directly down