I used sbsetting to respring and the apple logo stayed on the screen for a long time. Once it went away the screen flashed and then went black. Then the Apple logo came back with the progress circle in the middle (but not moving). It seems to be stuck in this loop.

I then put in into recovery mode and tried to restore from backup but iTunes would not let me as it detected it in recovery mode.
I then took it out of recovery mode and plugged it back in. iTunes now recognized it but it was still in that loop.
I was able to restore it from backup this time but I am curious as to what happened