You are correct that those blood test results are not good as the insulin is over 200uIU/ml and the ACTH is 134pg/ml. He is definitely positive for both PPID and IR. No point in redoing the glucose unless you test insulin at the same time as the point is to see the relationship between the two, not only the raw number itself.
Not walking well may indicate he is starting to suffer from laminitis, so he needs to have the PPID treated as soon as possible.
Lavinia, George Too, Calvin (PPID) and Dinky (PPID/IR)
Nappi, George and Dante Over the Bridge
Jan 05, RI