Yes, we don't know how effective this process of HCG and Clomid have been due to not knowing his baselines values, but he's still at 500+.
However, the OP needs to come off (and I mean completely off) all PCT meds for 3-4 weeks, then get BW done again. I'm pretty sure its going to be less, but postulating.
The T levels are not solely down to HCG though (which is great) as LH and FSH are not that bad.
I'd stop with the HCG and continue Clomid/Tamox therapy for 3-4 weeks, then come off it ALL, wait 4 weeks and get BW done.
Either way, these numbers are impressive to me. Some testicular functions has been restored on not much HCG.
Also...
HCG has a refractory peroid of 72 hours (approx). So after injection T levels spike in a matter of hours, then fall slowly, after 2 days or so, T levels spike again MORE than the first spike. This is why HCG should not be used more than 2-3 times weekly IMO. You'll also see this stated by endo's.