You have been able to have spaces in your name for awhile now and it hasn't crashed the server before. My toon's name like 2 weeks ago had a space in it. I actually thought I was bugged in character creation cause it didn't add a space though I had seen people's names with spaces. Lo and behold I held the spacebar a sec, the space went in and I was happy cause I had the "first and last" name I wanted. I ended up re-rolling that toon to stat differently and stayed with a single word name.

The fact of the matter is the character creation screen should NOT have allowed a name with spaces or whatever else names are not suppose to have when you hit the "Check Name" button. This is not the fault of a player but a bad character creation function.