This is an interesting verse for a number of reasons. The language uses a number of words with double meanings. This is common for Jesus, but unusual for his parables. Many of these meanings revolved around military defense and death. Readers may want to play with possible double meanings with this one to get at what Jesus is implying.
The oddest thing about this verse is that the word translated "let" is misspelled, making it into a common word that means "he was eaten." The meaning from the context is clearly to "give out," which means "rent" when applied to a house. However, this misspelling in all three Gospel versions of this parable might be an intentional play on words, equating "giving out" this vineyard with the owner being devoured by the renters.
Christ's Words in Matthew as a Guide to 40 Days of Prayer.