We knew a reset was coming based on the ending to last episode, but the point where Subaru resets to was unexpected. In retrospect, it's quite reasonable, since it's the best position from whence Subaru could correct the circumstances that led to his death last episode. That only makes this save point more suspicious, however, as yet another intimation that the Witch is directly guiding Subaru herself or else the power laid upon him is sentient. Also, this is the first time that Subaru has bounced back from a point after he helps protect Emilia from a threat to a time before he finished the job. That would seem to suggest that the witch doesn't consider Subaru just a disposable tool; she needs him alive as much as she needs Emilia. Too bad for Betelgeuse!