Hi FD,
Making it clearer now will be very hard indeed. The only thing that I can think of now that you have made the oil would be to redissolve the lot back into IPA again pass through activated carbon, re-filter and re-evaporate. You will loose yield and will only really be affecting the colour.
However, you could have done things slightly different when making the oil that would have given you purer results:
1) The time the trim was in the IPA. You do not mention how long you washed the oil for in the bucket but this should have only been about 1-2 minutes. After straining you could have re-washed it to see what you missed but believe me - there won't be much worth smoking. A shorter wash produces cleaner oil as the cannabinoids are virtually all dissolved straight away.
2) I am a firm believer in water washing the weed before an IPA wash. This will get rid of many water soluble contaminates before the IPA wash, thus preventing them from being dissolved in the IPA wash. Done in the bubble bags, you will ensure that no trichs are lost. Dry it out and IPA wash it.
3) The hand blender. Not done this before but I would assume that it is too vigorous. If I was to be doing it in a bucket then I would hand stir. Plus, was it a plastic bucket? - the IPA may leach the plastic and contaminate the oil this way, maybe think of a different container. I use glass jars and shake rather than mix.
Good job though mate and a tidy amount of oil you have there.

Edit; to address other points whilst I was posting:
The evaporation - I do this outside, waiting for a nice day before making oil. If in mid winter, I do it in the shed with the windows open. As you say - strictly no flames or sparks due to the build up of fumes. If you had added a slight heat source below the pyrex dish then it would have quartered (for example) the evaporation time. An electric hot plate, or failing that, a bowl of hot water (change when cooled) does the job nicely.
You mention freezer purging - spot on mate.
Smoking it: I tack a bit on a butter spreading knife, mildly heat it from below to make it runny and spread it into the joint. Either spread on tobacco or weed. This then ensures the spliff burns evenly.