A word for when a word is used incorrectly (grammatically) but can still be parsed in a grammatically correct way?

There are a few names for (rhetoric) vices that refer to using wrong words or wrong expressions at wrong places.

You are probably looking for acyrologia,

An incorrect use of words, especially the use of words that sound alike but are far in meaning from the speaker's intentions. Note: Malapropisms are a kind of acyrologia.

or malapropism,

A malapropism is an act of misusing or the habitual misuse of similar sounding words, especially with humorous results.

Related vice is also catachresis,

The use of a word in a context that differs from its proper application.

You might want to go through the list of vices to better define what you are looking for in according to existing classifications.

I think @Unreason's answer is fantastic, especially catachersis.

These kinds of errors could be considered solecisms, but the pun-like element is an interesting twist.

Generally, puns are understood as intentional wordplay. Here, there's a tension between an inadvertent mistake, and an outcome which has a double-meaning, or can be understood as being as being a pun within a certain frame of reference.

The use of ‘good’ as an adverb meaning something like ‘in a satisfctory manner’ is no more than a non-standard dialect form. It is found in the comments of British football supporters who allegedly say ‘The boy done good.’