Game crashing (alt code) symbol. - POTENTIALLY REALM-BREAKING

I was added to a realm of a friend, and he was messing around with some symbols for use on signs and world names. He used the emoji keyboard to get the symbols on an iOS device.

After messing around he found a symbol accidentally which, when the game displays it, makes Minecraft Pocket Edition crash.
He had entered this into the title of his realm, so when he loads opens his Minecraft PE it crashes as it was on his realm. He also added me (TyeDye_) and Johan (SuperJohan9000 i think)
My friend's name is M_C_P_E

The really bad thing is I cannot load my account, and play on realms as this bug also affects my realms listing as well, so everytime my account is logged in the game crashes. Even when I do not even go to the Realms tab, so I cannot even play singleplayer. I managed to quickly (after a few minutes of trying) log out of the glitched account and make a new one.

I am guessing the same bug is happening to Johan. He made a page to explain the problem and it shows the symbol, but I am not sure what symbol it is: https://dl.dropboxusercontent.com/s/ql0qlzhh6zckwif/infothingy.htm?token_hash=AAGO5LSJd3QZnm4Gd8tYYMLsMMwNFKaOpc1ctWgZmcddlA

I really hope you can fix this bug before the next update comes out, as this bug would be very easy to exploit and crash other people's Minecraft Pocket Edition accounts.

As well as this I am relatively well known on YouTube (18.5k subs) so youtubers may also be affected by people doing this meaning we would not be able to play online, so this needs to be fixed soon :s
Thanks
Josh / TyeDye_