My "grandfather" Refuses To Allow Me Access To A Trust I Am The Beneficiary For

Location: Las Vegas, NV.

In Feb, my grandmother passed away suddenly. She had a will and Revocable Trust already set up which named my "grandfather", her friend that she lived with for a long time, as trustee (they were also never married), and me as the sole beneficiary. In the trust she outlined that the house they lived in would be put in my name and the ~$175,000 in life insurance payouts would be available to me with the requirement that some be allocated to the maintenance of the property. She also made a specific point that my grandfather would not be denied residency at that property for as long as he would live (for context I don't live at that property currently).

The issue is that he is, has been and will always be a terrible person and con man. Why she was with him for so long I have no idea, but thats beside the point. It took until just this month for the insurance companies to issue the checks for the trust account and the money to clear. The trust does state that he would be the one to have direct access to the money but could not withdraw it unless it was to benefit me or the estate.

I was there when the account was set up with Wells Fargo, and he couldnt be bothered to deal with the online banking, but gave me permission to set it up and have access to it. Later once the money cleared, we both went to the bank to make 3 withdrawals. I stated that I'd like a large portion of the funds to pay for the various debts I have and help support me when I have to take time off work for my disabled mother. He claimed that it doesnt work that way, and he would have to write out the checks directly to whoever I would be paying, in only the exact amounts. There's absolutely nowhere in the trust documents that states this, however there ARE specific outlines that would allow him to delay my dispersment. None of which would apply here (they're all basically requiring that I am mentally able to make decisions, not dependant on illegal substances, not considered legally incompetent, not under duress). The 3 withdrawals he made were; 1.$3000 to my mother which was outlined in the will/trust documents. 2.$2700 cash for him (he stated he was entitled to 1% as a trustee which also isn't in the documents, as well as some money I "owed" him from before this) 3. $1200 as a cashiers check payable to me as "spending money". So he immediately contradicted himself anyways (which all of our interaction involving the money that day is video recorded on my phone for evidence).

My question is twofold. 1. would I have a strong legal case here to have him replaced as trustee? 2. since that day at the bank he gave me direct permission to access the online banking and Zelle payments, would I potentially get in trouble for using Zelle to transfer the amount I am allowed in the documents from the trust account to my personal account?

Sorry for the long post, any advice appreciated.