A trick I believe that works as well (just worked for me if we are in the same type of house, which I believe we are) is to run against the wall, then disconnect internet, then shut the game off. Log back in and you will be out.

Edit 12/2/2015: the realclown fixed this

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(0091613)
therealclown (reporter)
2015-12-01 09:06

the trick is to run against the wall and unplug your internet while you are doing that. when you reconnect and get back in the server you will be free. 100% working way out."

Worked fine!

http://steamcommunity.com/id/streetjumper4/ Steam ID

Regular Server

Unable to get out, please help :)

^ill try this, thank you

EDIT: @therealclown 's suggestion worked! To fix, you need to run against a wall and unplug your internet, it works! Thank you.