There's silly!
I have found a data sheet for the IC and that includes a protection circuit. Not, unfortunately one using a relay.
What is the amp used for? 25W into 8 Ohms is not a lot these days into modern compact speakers. The distortion figures are also not outstanding.
If used for non critical purposes, especially into some rough'ass speakers, I would simply bypass the the relay contacts. Those amp ICs were deployed in hundreds of thousands of mid-level "hi fis" over many years. Music centres, "micro amps" and even some huge ghetto blasters (probably in ICE as well? ) I saw a lot of this kit with similar ICs and cannot remember a single one going ape***t and destroying a speakers.
If REALLY low fi usage, a keys amp say, just put 2,200mfd 63V caps in each speaker leg.
"Self fullfilling prophecy" really? If the amp is wanted for a high grade system it's the wrong one! If not, mod it to keep the speakers safe.
Dave.