Nice work Dimitri - very nice detailed work.
You can grind the heads off the bolts using an air grinder with a carbide bit. The lock will slide off of the shafts and you can then remove them with vice grips. Then just replace when your ready with bolts that have a specific install tool and if you need to remove in the future you can easily. (if you remember where you put the part???)
For those who sit at home and dream-let them...Meoni