too much volume?
i wouldnt say that, it looks like a standard BBing program to me
def sounds like a tendon strain though and was probably in the making and this workout set it off
rest and ice as posted above it will subside with cessation of training but its quite possible it will return in a few workouts
if it does return once you have given it a break then you are really best off finding a good sports Dr, dont waste your time with regular GPs or their referred specialists save your money and time and go right to somebody reputable
where are you located?