From a pilot perspective,
I disagree slightly with fujii on this one (presumably ATCO?)..
First I don't have any problems with the phraseology on this one. To me it's pretty clear. My understanding is I can proceed to the VRP… but I need further instructions before doing something else. I can always try to second guess the ATCOs plans, and guess I am no. 1. But what if he simply forgot about me? Seen it happen many times in busy circuits. I would've done like the OP, orbited most likely. Another alternative which in hindsight might be a better option would be to continue on final while staying above pattern altitude. Gives the controllers a few more seconds to get back to you while you are not conflicting with the pattern traffic. Bugsmashers rarely have any problems loosing altitude quickly if need be.
As for the berating, think it was unfair. If he/she wants to play that game I would probably bite back with a quick "next time I need further instructions before reaching the VRP". Also gives them some feedback on why it happened and there was no ill intentions involved.
I have over three years instructing in SoCal area and some very busy airfields. I have seen ATCOs loosing control of the pattern.. They were actually doing a pretty good job but there was simply too many of us in the pattern, transiting, approaching, calling for dep etc. that you had to take control of your own situation and make what was reasonable for the time being. I think your orbit was such as case. Good job on that! Last thing you want to have is an airprox on final.