Very good advice here....
First, I did not know to turn off a app on the iPad you can double click the button, thus for me rebooting the iPad.. this would of saved time...
Second, yes you are correct that the music still was playing and I could of restarted the program with just a slight interruption in mixing.
The mics stopped working, but I do not know if that was because I was just banging on the iPad with frustration.
If the wireless goes, then yes- you need a backup analog mixer.
Thanks...