Unmounting sandbox directory does not work if USB was removed during process is running

[kiwidoggie]

!Kernel Panic
—
Today at 8:04 PM

not when its working right, that could be when i took out my USB as the game was running maybe?
yeah
if you take out the USB while the game is running it stays mounted

<118>[Syscore App] Syscore Event Queue Push : SCE_SYSCORE_EVENT_ON_PROCESS_UNLOADED
<118>[AppMgr] All processes exited
<118>[Syscore App] Syscore Event Queue Push : SCE_SYSCORE_EVENT_ON_APP_UNLOADED
<118>[AppMgr Trace]: AppId=0x6000640c  deleted
<118>[Syscore App] Kill App : 0xffffffff  => 0
<118>[Syscore App] blockingKill(0x6000640c, 1) complete
<118>[AppMgr] checkAppTerminated invalid app.
<118>[Syscore App] Syscore Event Queue Pop : SCE_SYSCORE_EVENT_ON_PROCESS_UNLOADED
<118>[Syscore App]  ExpandCpuSetMode : enable
<118>[Syscore App] Syscore Event Queue Pop : SCE_SYSCORE_EVENT_ON_APP_UNLOADED
<118>[SceLncService] start unmountAllForShellCoreInternal()
<118>[SceLncService] end unmo
untAllForShellCoreInternal()
<118>[SceLncService] onAppExit() appId={0x6000630b}
<118>[Syscore App] process delete event : pid=0x216
<
118>[SceLncService] Cleaning /av_contents/content_tmp
<118>[SceLncService] onAppExit() appId={0x6000640c}
<118>[sceProcessStarter] ProcessTerm() big/mini app title_id = [CUSA05333] root_dir = [/mnt/sandbox/CUSA05333_018]
[PFS] umount[0x000051dbdd5835f9] finished 0
[PFS] umount[0x000051dbddd5af88] finished 0
[PFS] umount[0x000051dbdd58234d] finished 0
[PFS] umount[0x000051dbdcede9c4] finished 0
<118>[BGFT] [657] GameStopped(CUSA05333, 2) start
<118>[BGFT] [659] GameStopped(CUSA05333, 2) end
<118>[SceLncService] Failed to rmdir {/mnt/sandbox/CUSA05333_018} (0x80020042) dirent={.
<118>..
<118>_mira
<118>}
<118>Task 000000ae : 0000033703741283(62596 msec) [type=3,subtype=6,slot=00] : ended (state=0,runstate=2,error=0x0)