How do I disable internet access on Fez for the Vita?

I bought Fez for the Vita, and I've been playing it for a few days.
When I load Fez, either when booting it from scratch, or by resuming it after a sleep operation, the game always wants to go online to do whatever.
However, most of the time I'm playing on my Vita, I'm not home, and therefore have no internet access (I have the WiFi only version of the Vita).
When I don't have internet access, the game stalls for about 20 seconds until it decides there is no internet connection, and lets me continue play. Sometimes it stalls up to a minute to ask me to choose a WiFi connection.
This is very annoying.
Is there a way to completely disable internet access for this game? or at least disable it when I am not connected to the internet? I've looked on the settings, and there seem to be no such setting for this.
Maybe by enabling airplane mode I could get rid of this, but I think that is overkill, since I want to be able to access the internet when I do have internet access at home.
I don't care about trophies or cloud saves or whatever the game wants to do online. I just want to play the game in the short spans of free time I have while riding the train, where 20 seconds or 1 minute is a considerable portion of that time.
Is there any way to disable this functionality for this game?
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How do I turn off all Internet access?
How to Turn off Internet Access at NightCan I turn off Internet connection?
Go to Start > Control Panel > Network and Internet > Network and Sharing Center. In the left-hand column, click Change adapter settings. A new screen will open with a list of network connections. Right-click Local Area Connection or Wireless Connection and select Disable.How do you turn on Wi-Fi on PS Vita?
Go to Control Panel/Network and Sharing Center and from the left hand window open the Network Adapter Settings. And chose your connection to which you are connected, open it and there you'll see its properties and status. Click on \u201cDisable\u201d to make it disable. Now your System will be disabled from Internet Access.HOW TO DISABLE NETWORK ACCESS FOR CERTAIN APP/PROGRAM(pc)
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