I've never seen any evidence for that narrative about Spence though. I saw some Warnock comments a few years prior, but nothing to stain Spence's reputation since he moved Boro. In reality what probably happened is that Spurs had no UEFA football and were left with Porro, Emerson and Spence. Ange may have even wanted Porro and Spence last season, but didn't upset the apple cart with Emerson who was a model pro himself.
Didn't the leeds manager say he had the ability but needed the aplication? Believe his youth team coach said similar.
As said, it wasn't just one manager that didn't fancy him.