I definitely agree with the RRD post by Cindi. Would also add you might wish to remove bush as quickly as possible. Since Rose Rosette disease has been there for at least a little while keep an eye on your other two bushes for rrd symptoms. The rrd shows in the center of bush in the 2nd picture. Rose Rosette is spread by the eriophyid mite. While mite can't fly it can be picked up by the wind and hitch rides on other insects. If it drops onto another rose bush that rose will also become infected. Please don't be discouraged. Thou I must admit after a 2 or 3 year battle rrd I did not add more roses for a good long time. Roses are to beautiful to resist forever. I'll just deal with rrd when it happens. Best wishes to you and your garden. After a close look at the other pictures rrd shows in all three photos. Perhaps they are all of the same bush.
