I don't know that there was any stalling, as it was licensed and released by Terrapin in 1982.
This person then did work for Logo Computer Systems on the competing version of Apple II Logo.
I'll message him and ask him to respond.
Ahh, looking down below at the first response there's a link to a '95 comp.lang.logo post with a great looong item by Leigh Klotz on the history of that. His claim was that it was legal wrangling between NSF and MIT on the licensing that caused the delay. This seems highly believable.
Byte magazine, August 1981, page 32.
The letter was from Stephen again, identified only as “MIT Logo Laboratory.”
”Texas Instruments is a very generous friend of MIT, and some people here are embarrassed about a situation that might threaten one of its sales programs. So, in an effort to appease its corporate friend, MIT has been stalling the distribution of Apple Logo.”
The whole thing is available on archive.org.