"Squeeze" occurs when PPS goes up, and borrowed & sold shares (Short INTEREST) need to be returned. So shorts need to buy back shares to return them, and run a risk of paying more, and losing $$.
But with only 3,269 shares short, that's not going to generate much buying pressure. http://otce.finra.org/ESI..
Short "volume" is unrelated, and has the unfortunate coincidence of having the word "short" in the description, so is easily misunderstood, or intentionally misrepresented in some cases.
Like saying state sales tax and corporate income tax are the same because they both have the word "tax".
"It is easier to fool someone, than to convince them they have been fooled."
For those that don't get it, it means that people need to be more careful, and do good due diligence.