I started my SRT much earlier in the PSA rise (.091) So can't offer much but I do have a question or two...
If your PSA went to 8, without a prostate, that seems very high to me. Is this assumption correct or is your SRT a second round of radiation?

Secondly, you'd need dates to know how to assign meaning to the readings. PSA has a half life of 3 days according to my doc.

Thirdly, I belief trend is more important than level. So if you're at .32 and were higher at your last reading, great, it's going in the right direction. If your next blood test continues in that direction, all good.

Best of Luck to you!