Recent patches for Sonic Unleashed seem to have removed the swastikas featured on ice level Holoska. The symbol could be seen on the daytime levels, and was first spotted back in November.
It is not known whether the change was made in the most recent patch, or an earlier one. Whenever it was made, it has only been noticed today.
On that note, I'll leave you with this. Make of it what you will...
[Source: TSSZ News]