I have got an SR open and had a phone conversation this morning about it which may be leading somewhere other than another replacement drive (perhaps an LCC reseat)! In terms of your questions, though:
The SCSI bus errors came as a burst of 84 soft SCSI Bus Errors errors logged on SP B for 0/2/5 from 00:28:41 to 00:29:09 (17 were logged from 00:28:41 to 00:28:43 on SP A). The next significant event on SP B is the "drive handler" offline I quoted above at 01:25:24. I haven't spotted any media errors on the affected drive prior to that (whereas I've seen that for other drives prior to them failing).
Thanks again fior the response