How can I recover from failed app update? Twice now I have apps fail to install during an update and then been unable to restart the process or use the app. I am using the Update All function in the "Apps" App. 

Last time it effected only one app. Despite full reboots and going back into the Update screen the failed app was stuck at the "Installing" step. I could not resume the update or use the app. I finally deleted the app and reinstalled and things seem to go fine. 

This time it failed installing the Twitter app and the two apps after it in the list now are also stuck. Again I've tried full shutdown and reboot with no luck. I can update other apps but those three seem stuck in limbo. I suppose I can delete them are reinstall as before but is there a better way?
This has now happened a couple of more times. I've been able to resolve this the last couple of times by tapping the app back on the main screen (ie not in the app store). The label below it changes to 'Waiting'. Then tapping it again it changes the label to 'Loading' or 'Installing' and the update finally completes. I can then update other apps.

Otherwise the only other solution is to delete and reinstall the app.