No this is not true. Motorstorm Arctic Edge was never available on the Vita PSN Store in the US in the first place. This is something I actually called out before the initial VHBL release:Was it true that your Half Byte Loader caused Motorstorm: Artic Edge to be removed from the PSN store?
(here: http://wololo.net/2012/02/29/the-day-sony-stood-still-and-a-date-for-vhbl/)let’s reveal a few essential things here, starting with the bad news: The game used by Teck4′s exploit is not available on the US vita store. Blame Sony and their “275 out of 900 PSP games available for your vita” scheme for this, not us. Part of the waiting time was to see if Sony would add this game to the US store at some point. It is obviously compatible since it is available in other continents, so my guess is that this is a marketing or a legal decision. Long story short, people in the US who want to enjoy HBL on their vita, for now, will have to create a European (or HK, or JP,…PSN account, buy a PSN card for that specific store
Sony have indeed be known to remove the exploited games, but they so far have always put them back after the firmware was patched. Motorstorm Arctic Edge did not return to the US PSN for the Vita because it was never there in the first place.