Unlikely!! When FBT's breed they go into amplexus, this is where the male grabs a female (or a male, they're not fussy as long as it moves!!) around the waist, from behind and holds on for dear life.
If he's picked a receptive female she will release eggs and the male will fertilise them. This happens outside the body.
It sounds possible that these two toads were wrestling, possibly over a cricket or maybe one toad had seen the other move and grabbed it thinking it was food and wasn't letting go, then you may hear the 'release' call.
Mine will have a little tussle if one has a cricket in its mouth and another toad grabs for it!
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