Rebroadcasted and should now be viewable in some block explorer's other than chain.so. You can just enter this in viabtc https://pool.viabtc.com/tools/txaccelerator. Make sure to hit the Submit button at XX:59:59 (Use a timer) since 100 slots will be available at the start of an hour e.g. 12:00:00
EDIT: "Transaction added to acceleration queue". You should expect a confirmation in a few hours EDIT 2: This has been added on block 503552 by viabtc