You might be able to see who owns that land using this. Put in you adress and do a search, then you should be able to see an interactive map, once on the map you should be able to toggle into an information mode and be able to click on the 10' path and find out who owns it.
http://www.acgov.org/MS/prop/index.aspx
If you want to PM me your address I'll do some research from here and link you to what I find out.
The 10 foot path is probably an open right of way and you and your neighbor might be able to park in it. The HOA by laws might adress its use or the record plat that you posted scans from might define it more in its dedication.
As far as your survey goes, you most likely paid for one, if you do not have one your probably going to have a hard time getting one. I would at the very least call the title company and ask for a copy from your closing, you paid for it you should have recieved a copy from the title company. They will probably try to blow you off because asking for a copy will require them to work, they already appear to be a poor title company by not giving you a copy of your survey I will not be suprised if they try to get out of finding your copy.