I'm trying hard not to plant seeds of doubt in your head, but I find it interesting that your lead doctor appears to be a transplant specialist. It kind of makes sense now with the comments about your immune system bottoming out and such. That is what you would expect with a transplant patient. He may be a good doctor but it puts you in a position that you have to consider. If your knee hurts and you go to an orthopedic surgeon, don't be surprised when he says you need knee surgery. He's a surgeon, that's what he does. Likewise when you see a transplant doctor, it seems there is a tendency to move towards transplant. It's what they know and therefore how they treat. I do think it is in your best interest to get a consultation with a CML specialist just to get some things cleared up. If you are up for the travel, you can come up to NYC and get an appointment at Memorial Sloan Kettering. MSKCC is an excellent cancer center with CML specialists. A little closer to home might be University of Pennsylvania or Fox Chase, both I believe have CML specialists on staff. You may want to start a new thread on the board and ask in the title if anyone knows a good specialist in your area.
I noticed you mentioned your spleen was not enlarged, which would also seem to be less common if you were in accelerated phase.
For your information there are various definitions of Accelerated Phase according to NCCN guidelines. The one that jumped out at me in relation to your situation is under the International Bone Marrow Transplant Registry Criteria. There is a bullet point that says "Anemia or thrombocytopenia unresponsive to hydroxyurea or busulfan". You said your platelets are very high (thrombocytopenia) and the hydroxyurea hasn't brought them down. So that is a characteristic of accelerated phase. But, it is only one characteristic. There are four different criteria definitions. The common factors in all of them are blasts 5% - 20%, Basophils > 20%, evidence of clonal evolution in bone marrow. There are other factors as well and high platelets is definitely one of them, but until you know the blasts and all the other info you can't be sure of the phase. Given your platelets are so high does appear to put you at a higher risk, so either way you should likely find a hematologist/oncologist with experience treating CML.
Best of luck, I hope I haven't made the wheels in your head hurt. I am certainly not a doctor, I am only relaying the information I have read and sharing with you what I would do as a fellow patient. You just want to get settled at the beginning so you can get going with your treatment and get on with your life, you don't want to be running around second guessing everything and waiting for the floor to fall out.